Label gluing device

Abstract

The invention discloses a label gluing device, and relates to the technical field of label gluing, the label gluing device comprises a mounting rack, and also comprises a slit die head mounted on the top of the mounting rack; the interval adjusting mechanism is connected with the slit die head, the interval adjusting mechanism comprises a plurality of trapezoid blocks, the trapezoid blocks are attached to one another, and a feeding opening is formed in one side of each trapezoid block; the interval adjusting mechanism is installed to intelligently set the interval of the spraying sizing material, the influence of frequent replacement of the coating gasket on the die head is avoided, and compared with the coating gasket, the coating gasket does not need to be disassembled and is more convenient and flexible; the die head sizing material flow control mechanism is installed to adjust the sizing material flow according to the real-time flow of materials in the die head, and when the flow is insufficient, the die head sizing material compensation mechanism is used for achieving sizing material backflow and material channel compensation, so that the stability of the flow in the material channel is guaranteed, and the stability and uniformity of the sizing material sprayed to a base material are guaranteed; the thickness consistency of the sizing material is ensured, and the waste of the sizing material is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of label gluing, and in particular to a label gluing device. Background Art

[0002] Gluing is required during label processing. Currently, in order to ensure the stability and uniformity of glue coating, it is necessary to spray through a slit die. The slit die is a precision mold or coating tool. Its core feature is a narrow channel or gap structure. It is mainly used to control the flow state or distribution form of fluids (such as molten plastics, coatings, adhesives, etc.) to achieve high-precision molding or uniform coating. It consists of upper and lower molds and gaskets. The gap width of the fluid outlet is controlled by adjusting the gasket thickness or the mold hole size. Therefore, when different longitudinal gaps need to be achieved, it is necessary to replace the matching gasket. The gasket is located between the upper and lower molds, so it is more troublesome to disassemble. , and it is easy to scratch the material channel of the die head and cause damage to the die head. In addition, the adjustment of the longitudinal interval through the gasket is cumbersome, time-consuming and labor-intensive. In addition, the adjustment of the lateral interval is mostly achieved through an intermittent valve, but the intermittent valve needs to be coordinated with the feeding equipment so that both stop working at the same time to achieve the lateral interval. This frequent start-stop method is easy to cause damage to the equipment, and different gaskets need to be customized to meet the use of different labels, which is costly. In addition, during the spraying process, the flow rate in the die head may change due to reasons such as feeding. The change in flow rate will affect the uniformity and thickness of the rubber sprayed, affecting the quality of the label. Summary of the invention

[0003] The present invention provides a label gluing device to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A label gluing device comprises a mounting frame and also includes: a slot die mounted on top of the mounting frame; An interval adjustment mechanism is connected to the slit die head, the interval adjustment mechanism comprises a plurality of trapezoidal blocks, the plurality of trapezoidal blocks are fitted together, a feed port is provided on one side of the trapezoidal block, a material pipe is connected to the other side of the trapezoidal block, and a material collection box is connected to the bottom ends of the plurality of material pipes; The die head rubber material flow control mechanism is connected to the interval adjustment mechanism and includes a plurality of baffles, and a flow sensor is installed on the top of the trapezoidal block; The die head rubber compensation mechanism is connected to the interval adjustment mechanism, and includes a material chamber 1 and multiple material chambers 2 opened inside the material collection box. The multiple material pipes are correspondingly connected to the multiple material chambers 2. A push plate is provided inside the material chamber 2, a pressure sensor is fixed on the top of the push plate, and an electric valve 1 is installed on the push plate.

[0005] The mounting frame comprises a base, two supporting plates are fixed on the top of the base, and mounting plates are fixed on the tops of the two supporting plates.

[0006] The slit die head includes a lower die fixed on the top of a mounting plate, the top of the lower die is rotatably connected to an upper die, a material channel is provided on one side of the upper die adjacent to the lower die, a feed pipe connected to the material channel is fixed inside the upper die, a feeding device is externally connected to the feed pipe, and a plurality of hanging rings are fixed on the top of the upper die.

[0007] The interval adjustment mechanism also includes a plurality of cylinders 1 fixed to the top of the material collection box, the output end of the cylinder 1 is fixedly connected to the bottom of the trapezoidal block, and the cylinder 1 is connected to an external air source; A groove is provided at the discharge position of the lower die, and a plurality of the trapezoidal blocks are sleeved inside the groove; A fixing frame is fixed to the bottom of the lower die, and the fixing frame is fixedly connected to the top of the material collecting box.

[0008] The die head rubber material flow control mechanism also includes a plate opening opened at the bottom of the feed port, the baffle is sleeved inside the plate opening, a plurality of cylinders 2 are fixed on the top of the manifold box, the cylinders 2 are connected to an external air source, and the output end of the cylinders 2 is fixedly connected to the bottom of the baffle.

[0009] The die head rubber material compensation mechanism also includes a bottom plate fixed to the inner wall of the material cavity, and the inside of the bottom plate is fixed with three cylinders, the same number as the push plate, and the output end of the three cylinders is fixedly connected to the top of the push plate; A discharge port is provided on the bottom plate, and a second electric valve is installed inside the discharge port. The second electric valve is connected to the material barrel through a material delivery pipe; A material extraction pump is fixed at the bottom of the base plate, the extraction end of the material extraction pump is connected to the material delivery pipe, the discharge end of the material extraction pump is connected to a multi-way pipe, multiple joints of the multi-way pipe are each installed with an electric valve three, the multi-way pipe is fixed to the outer wall of the material collection box, and multiple joints of the multi-way pipe are respectively connected to multiple material chambers two.

[0010] A controller is fixed on one side of the upper mold, and the controller is electrically connected to the material extraction pump, electric valve 1, electric valve 2, flow sensor, pressure sensor, electric valve 3, cylinder 1, cylinder 2 and cylinder 3 respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention intelligently sets the interval of the sprayed rubber material by installing an interval adjustment mechanism, thereby solving the impact of frequent replacement of the coating gasket on the die head. In addition, compared with the coating gasket, it does not need to be disassembled, which is more convenient and flexible; 2. The present invention installs a die head rubber flow control mechanism to adjust the rubber flow according to the real-time flow of the material in the die head, and uses the die head rubber compensation mechanism to realize rubber reflux when the flow is insufficient, compensate for the material channel, ensure the stability of the flow in the material channel, ensure the stability and uniformity of the rubber sprayed to the substrate, ensure the consistency of the thickness of the rubber, and avoid wasting the rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic structural diagram of a label gluing device.

[0013] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a label gluing device.

[0014] Figure 3 The figure is a schematic diagram of the internal structure of the lower mold of a label gluing device proposed by the present invention.

[0015] Figure 4 The present invention provides a schematic structural diagram of a die head glue material flow control mechanism of a label gluing device.

[0016] Figure 5 The present invention provides a schematic structural diagram of a die head glue material compensation mechanism of a label gluing device.

[0017] Figure 6 The present invention provides a schematic diagram of the exploded structure of a die head glue compensation mechanism of a label gluing device.

[0018] In the figure: 1. mounting frame; 11. base; 12. support plate; 13. mounting plate; 2. slit die; 21. lower die; 22. upper die; 23. feed pipe; 24. lifting ring; 25. material channel; 3. interval adjustment mechanism; 31. trapezoidal block; 32. feed port; 33. material pipe; 34. cylinder one; 35. fixing frame; 36. material collection box; 37. groove; 4. die head rubber flow control mechanism; 41. baffle; 42. flow sensor; 43. cylinder two; 5. die head rubber compensation mechanism; 51. bottom plate; 52. cylinder three; 53. push plate; 54. electric valve one; 55. material chamber two; 56. discharge port; 57. electric valve two; 58. material pump; 59. multi-way pipe; 510. material chamber one. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] 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 invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] Example: Refer to Figure 1-Figure 6 : A label gluing device, comprising a mounting frame 1, and also comprising: A slot die 2, which is mounted on the top of the mounting frame 1; The interval adjustment mechanism 3 is connected to the slit die 2, and includes a plurality of trapezoidal blocks 31, the plurality of trapezoidal blocks 31 are attached to each other, a feed port 32 is provided on one side of the trapezoidal block 31, a material pipe 33 is connected to the other side of the trapezoidal block 31, and a material collection box 36 is connected to the bottom ends of the plurality of material pipes 33; The die head rubber material flow control mechanism 4 is connected to the interval adjustment mechanism 3 and includes a plurality of baffles 41. A flow sensor 42 is installed on the top of the trapezoidal block 31; The die head rubber compensation mechanism 5 is connected to the interval adjustment mechanism 3, and includes a material chamber 1 510 and multiple material chambers 2 55 opened inside the material collection box 36. The multiple material pipes 33 are correspondingly connected to the multiple material chambers 2 55. The interior of the material chamber 2 55 is provided with a push plate 53, the top of the push plate 53 is fixed with a pressure sensor, and the push plate 53 is installed with an electric valve 1 54.

[0023] The mounting frame 1 includes a base 11 , two support plates 12 are fixed on the top of the base 11 , and a mounting plate 13 is fixed on the top of the two support plates 12 .

[0024] The slit die 2 includes a lower die 21 fixed on the top of the mounting plate 13, the top of the lower die 21 is rotatably connected to an upper die 22, a material channel 25 is provided on one side of the upper die 22 adjacent to the lower die 21, a feed pipe 23 connected to the material channel 25 is fixed inside the upper die 22, the feed pipe 23 is externally connected to a feeding device, and a plurality of hanging rings 24 are fixed on the top of the upper die 22.

[0025] The interval adjustment mechanism 3 also includes a plurality of cylinders 1 34 fixed on the top of the material collection box 36, the output end of the cylinder 1 34 is fixedly connected to the bottom of the trapezoidal block 31, and the cylinder 1 34 is connected to an external air source; A groove 37 is provided at the discharge position of the lower die 21, and a plurality of trapezoidal blocks 31 are sleeved inside the groove 37; A fixing frame 35 is fixed to the bottom of the lower mold 21 , and the fixing frame 35 is fixedly connected to the top of the material collecting box 36 .

[0026] The die head rubber flow control mechanism 4 also includes a plate opening opened at the bottom of the feed port 32, a baffle 41 is sleeved inside the plate opening, and a plurality of cylinders 43 are fixed on the top of the material collection box 36. The cylinders 43 are connected to an external air source, and the output ends of the cylinders 43 are fixedly connected to the bottom of the baffle 41.

[0027] The die head rubber material compensation mechanism 5 also includes a bottom plate 51 fixed to the inner wall of the material cavity 1 510, and the inside of the bottom plate 51 is fixed with the same number of cylinders 3 52 as the push plate 53, and the output end of the cylinder 3 52 is fixedly connected to the top of the push plate 53; A discharge port 56 is provided on the bottom plate 51, and an electric valve 2 57 is installed inside the discharge port 56. The electric valve 2 57 is connected to the material barrel through a material delivery pipe. A material extraction pump 58 is fixed to the bottom of the base plate 51, and the extraction end of the material extraction pump 58 is connected to the material delivery pipe, and the discharge end of the material extraction pump 58 is connected to a multi-way tube 59, and electric valves three are installed in multiple joints of the multi-way tube 59. The multi-way tube 59 is fixed to the outer wall of the material collection box 36, and the multiple joints of the multi-way tube 59 are respectively connected to multiple material chambers 2 55.

[0028] A controller is fixed on one side of the upper mold 22, and the controller is electrically connected to the extraction pump 58, electric valve 1 54, electric valve 2 57, flow sensor 42, pressure sensor, electric valve 3, cylinder 1 34, cylinder 2 43 and cylinder 3 52 respectively.

[0029] Working principle: The feeding device feeds the adhesive through the feeding pipe 23, and the adhesive enters the inside of the material channel 25, and then is sprayed from the material channel 25 to the surface of the label substrate, so that the surface of the substrate is covered with a layer of adhesive; The longitudinal and transverse spacing of the coating are adjusted according to the printing of the label, so that the glue on the surface of the substrate is in discontinuous blocks. The spacing adjustment method can avoid the position where the substrate needs to be cut later, reducing the waste of glue. The specific adjustment method is as follows: longitudinal spacing: according to the spacing coordinates, start the corresponding cylinder 1 34, push up the trapezoidal block 31 connected thereto, so that the top of the trapezoidal block 31 contacts the top of the material channel 25, and divide the entire material channel 25 into multiple small material channels through multiple trapezoidal blocks 31. When the glue is sprayed out, part of it will be blocked by the trapezoidal block 31, and the blocked position is a blank position without glue, thus achieving the longitudinal spacing; the transverse spacing is generated as follows: on the basis of longitudinal adjustment, when a transverse blank position is needed, start the remaining cylinder 1 34 to push up the remaining trapezoidal blocks 31, temporarily block the material channel 25, and the glue in the blocked material channel 25 cannot be sprayed out, so that a transverse blank will appear on the substrate, achieving the purpose of regional gluing and reducing the waste of glue; When adjusting horizontally and vertically, the discharge position space of the material channel 25 is reduced. If the material channel 25 becomes smaller while the feeding device continues to feed evenly, the flow rate of the rubber at the unblocked position will increase, and the thickness of the rubber sprayed on the substrate will increase, exceeding the thickness standard of the rubber, thereby causing waste. Therefore, when the trapezoidal block 31 moves up to block the material channel 25, the discharge port 56 is open, and the rubber at the blocked position will directly enter the interior of the feed port 32, and then enter the interior of the material chamber 2 55 connected thereto through the soft material pipe 33, and then fall on the top of the push plate 53. The pressure sensor obtains the material quantity data at the top of the push plate 53. When the pressure reaches the standard, the rubber in the material chamber 2 55 reaches the storage standard. If it continues to be stored, it will overflow through the material pipe 33 and the trapezoidal block 31. After reaching the standard, the electric valve 1 54 is opened, and the rubber at the top of the push plate 53 passes through the electric valve 1 54 and enters the interior of the material chamber 1 510. The electric valve 2 57 is opened, and the rubber in the material chamber 1 510 flows out. The flow sensor 42 on the unblocked trapezoidal block 31 obtains the flow of the rubber material flowing through the upper part. When the flow rate is low at a certain position (the feeding device is unstable), the cylinder 2 43 below the trapezoidal block 31 in the blocking process near the low flow position is started to operate, and the cylinder 2 43 pushes the baffle 41 near the position to move up to close the feed port 32. The amount of closure can be determined according to the flow data. The feed size of the feed port 32 is reduced to reduce the amount of rubber entering, thereby solving the problem of low flow and ensuring the uniformity of the sprayed rubber. When the above operation method still shows low flow, the electric valve 1 54 in the material chamber 2 55 below the trapezoidal block 31 in the blocking process near the low flow position is closed, and then Then, the cylinder three 52 at the bottom of the electric valve one 54 is started to push the push plate 53 and the electric valve one 54 upwards, and the rubber material previously stored in the material chamber two 55 is pushed upwards, and the rubber material returns to the inside of the material channel 25 through the material pipe 33 and the trapezoidal block 31, so as to compensate for the rubber material at the low flow position in the material channel 25. If the material stored in the material chamber two 55 still cannot meet the demand, the electric valve two 57 is closed, and then the extraction pump 58 is started to extract the rubber material discharged into the material barrel, and then inject it into the material chamber two 55 through the multi-way pipe 59 (the multi-way pipe 59 needs to be opened to connect the electric valve three of the material chamber two 55), so as to replenish the material in the material chamber two 55, ensure the uniformity of the rubber flow in the material channel 25, and ensure the uniformity of the rubber coverage.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A label gluing device, comprising a mounting frame (1), characterized in that: Also includes: A slot die (2) mounted on top of the mounting frame (1); an interval adjustment mechanism (3) connected to the slit die (2), the interval adjustment mechanism (3) comprising a plurality of trapezoidal blocks (31), the plurality of trapezoidal blocks (31) being fitted together, a feed port (32) being provided on one side of the trapezoidal block (31), a material pipe (33) being connected to the other side of the trapezoidal block (31), and a material collection box (36) being connected to the bottom ends of the plurality of material pipes (33); A die head rubber material flow control mechanism (4), which is connected to the interval adjustment mechanism (3) and comprises a plurality of baffles (41), and a flow sensor (42) is installed on the top of the trapezoidal block (31); The die head rubber material compensation mechanism (5) is connected to the interval adjustment mechanism (3), and includes a material chamber 1 (510) and a plurality of material chambers 2 (55) opened inside the material collection box (36); the plurality of material pipes (33) are correspondingly connected to the plurality of material chambers 2 (55); a push plate (53) is sleeved inside the material chamber 2 (55); a pressure sensor is fixed on the top of the push plate (53); and an electric valve 1 (54) is installed on the push plate (53).

2. A label gluing device according to claim 1, characterized in that: The mounting frame (1) comprises a base (11), two support plates (12) are fixed on the top of the base (11), and mounting plates (13) are fixed on the tops of the two support plates (12).

3. A label gluing device according to claim 2, characterized in that: The slot die (2) comprises a lower die (21) fixed on the top of a mounting plate (13); the top of the lower die (21) is rotatably connected to an upper die (22); a material channel (25) is provided on one side of the upper die (22) adjacent to the lower die (21); a feed pipe (23) connected to the material channel (25) is fixed inside the upper die (22); a feed device is externally connected to the feed pipe (23); and a plurality of lifting rings (24) are fixed on the top of the upper die (22).

4. A label gluing device according to claim 3, characterized in that: The interval adjustment mechanism (3) further comprises a plurality of cylinders one (34) fixed on the top of the material collecting box (36), the output end of the cylinder one (34) being fixedly connected to the bottom of the trapezoidal block (31), and the cylinder one (34) being connected to an external air source; A groove (37) is provided at the discharge position of the lower die (21), and a plurality of the trapezoidal blocks (31) are sleeved inside the groove (37); A fixing frame (35) is fixed to the bottom of the lower die (21), and the fixing frame (35) is fixedly connected to the top of the material collecting box (36).

5. A label gluing device according to claim 4, characterized in that: The die head rubber material flow control mechanism (4) also includes a plate opening opened at the bottom of the feed port (32), the baffle (41) is sleeved inside the plate opening, and a plurality of cylinders (43) are fixed on the top of the material collection box (36), the cylinders (43) are connected to an external air source, and the output end of the cylinders (43) is fixedly connected to the bottom of the baffle (41).

6. A label gluing device according to claim 5, characterized in that: The die head rubber material compensation mechanism (5) further comprises a bottom plate (51) fixed to the inner wall of the material chamber (510), and the inside of the bottom plate (51) is fixed with cylinders (52) of the same number as the pusher plate (53), and the output end of the cylinder (52) is fixedly connected to the top of the pusher plate (53); The bottom plate (51) is provided with a discharge port (56), an electric valve 2 (57) is installed inside the discharge port (56), and the electric valve 2 (57) is connected to an external material barrel through a material delivery pipe; A material extraction pump (58) is fixed at the bottom of the base plate (51); the extraction end of the material extraction pump (58) is connected to the material delivery pipe; the discharge end of the material extraction pump (58) is connected to a multi-way pipe (59); electric valves (3) are installed in the multiple joints of the multi-way pipe (59); the multiple joints of the multi-way pipe (59) are fixed to the outer wall of the material collection box (36); the multiple joints of the multi-way pipe (59) are respectively connected to the multiple material chambers (55) (2).

7. A label gluing device according to claim 6, characterized in that: A controller is fixed on one side of the upper mold (22), and the controller is electrically connected to the material extraction pump (58), electric valve 1 (54), electric valve 2 (57), flow sensor (42), pressure sensor, electric valve 3, cylinder 1 (34), cylinder 2 (43) and cylinder 3 (52).

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