Printing mechanism and sealing machine

Abstract

The utility model discloses a printing mechanism and a sealing machine, the printing mechanism comprises a pair of printing wheels arranged up and down, the printing wheels are rotatably connected to the sealing machine, a character assembly is arranged between the two printing wheels, the character assembly comprises a plurality of character grains I and a plurality of character grains II engaged with the character grains I to realize character imprinting, and the character grains II are arranged on the printing wheels. Protruding characters are arranged on the surfaces of the first character grains, character grooves matched with the protruding characters in shape are formed in the surfaces of the second character grains, a plurality of first character grains or second character grains are distributed on the periphery of one printing wheel, and a plurality of second character grains or first character grains meshed with the first character grains or the second character grains to achieve character imprinting are distributed on the periphery of the other printing wheel. The stamping device is obvious in stamping effect, and characters of the packaging bag are clear.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a printing mechanism and a sealing machine. Background Art

[0002] The traditional film sealing machine places the part of the packaging bag that needs to be sealed on the transmission belt. The transmission belt drives the sealed part to enter between the two heating blocks of the film sealing machine. The heating block heats the part of the packaging bag that needs to be sealed. After cooling, the sealing is completed. The seal is embossed, and characters such as the production date are embossed on the packaging bag.

[0003] However, the existing printing device includes a pair of printing wheels arranged up and down, one of which has a plurality of recessed characters arranged circumferentially. When the two printing wheels rotate, they squeeze the packaging bag to achieve character embossing, but the embossing effect is not good, the embossing depth is shallow, and it is not clear enough. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a printing mechanism and a sealing machine.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printing mechanism, comprising a pair of printing wheels arranged up and down, the printing wheels are rotatably connected to a sealing machine, a character assembly is arranged between the two printing wheels, the character assembly comprises a plurality of character grains one and a plurality of character grains two that engage with the character grains one to achieve character imprinting, the surface of the character grains one is provided with protruding characters, the surface of the character grains two is provided with character grooves adapted to the shape of the protruding characters, a plurality of character grains one or character grains two are arranged on the periphery of one of the printing wheels, and a plurality of character grains two or character grains one that engage with the character grains one or character grains two to achieve character imprinting are arranged on the periphery of the other printing wheel.

[0006] By adopting the above technical solution: character embossing is achieved by the engagement of character grain one and character grain two. During the synchronous rotation of the two printing wheels, the protruding characters of character grain one and the character grooves of character grain two are inserted, so that the packaging bag has a larger deformation amount, the embossing effect is obvious, and the characters are clear. Several groups of repeated character grains one or two can be set to cover the entire printing wheel, or only one group can be set along the circumferential direction of the printing wheel, depending on the actual situation.

[0007] As a preferred technical solution of the utility model, a character disk is fixed or integrally provided on the printing wheel, and a plurality of grooves are circumferentially provided on the character disk for embedding character grain one or character grain two.

[0008] By adopting the above technical solution, the required character particles can be replaced according to demand, which is convenient for subsequent character printing.

[0009] As a preferred technical solution of the utility model, the printing wheel includes an inner retaining ring, an outer retaining ring and a threaded column located therebetween, the threaded column is fixed or integrally arranged on the inner retaining ring, the character disk is sleeved on the threaded column, and the inner retaining ring is threadedly connected to the outer retaining ring through the threaded column to fix the character disk.

[0010] By adopting the above technical solution, disassembly and assembly are more convenient, and subsequent replacement of type particles is convenient.

[0011] As a preferred technical solution of the utility model, the threaded column is a hollow threaded column and the threaded column extends to the inner hole of the outer retaining ring. A heating tube is arranged in the threaded column, and a temperature sensor for detecting the temperature of the heating tube is also arranged.

[0012] By adopting the above technical solution, the printing temperature can be accurately controlled, which is beneficial to the deformation of the packaging bag and improves the character printing effect.

[0013] As a preferred technical solution of the utility model, a rotating shaft is provided at one end of the inner retaining ring relative to the outer retaining ring, and the rotating shaft is rotatably installed on the sealing machine. The rotating shaft passes through the threaded column and extends to the inner hole of the outer retaining ring. The heating tube is located in the rotating shaft, and a collector ring and a carbon brush cooperating with the collector ring are provided at one end of the rotating shaft relative to the printing wheel.

[0014] By adopting the above technical solution, the collector ring and the carbon brush are fixed in the sealing machine, and the heating rod wire will not be entangled when the shaft rotates, thereby affecting the operation.

[0015] As a preferred technical solution of the utility model, the interior of the rotating shaft is hollow and is provided with openings at both ends, and a plug for closing the opening is provided at one end of the rotating shaft located at the outer retaining ring.

[0016] By adopting the above technical solution, the temperature loss of the heating rod can be avoided.

[0017] As a preferred technical solution of the utility model, it also includes a mounting frame fixed or integrally arranged in the sealing machine, the printing wheel is rotatably connected to the mounting frame through a rotating shaft, a gear is arranged on the rotating shaft of each printing wheel and the two gears are meshed and linked, and a printing drive mechanism is also provided in the sealing machine for driving any rotating shaft to rotate.

[0018] By adopting the above technical solution, the printing drive mechanism in this embodiment can use a motor in conjunction with a gear set to drive the shaft to rotate, or the motor can drive the shaft to rotate through a pulley or a belt. It is not limited to the above methods. This is existing technology, so it will not be elaborated in detail.

[0019] As a preferred technical solution of the utility model, a pressure regulating mechanism is also arranged between the two printing wheels, and the pressure regulating mechanism includes a rocker arm and an operating member. The rocker arm swings relative to the mounting frame, and the rocker arm is hinged to the sealing machine or the mounting frame. The operating member includes a knob, a connecting shaft and a cam. The connecting shaft is rotatably connected to the sealing machine or the mounting frame, and the cam and the knob are respectively located at both ends of the connecting shaft. The cam abuts against one end of the rocker arm, and a spring is arranged at one end of the rocker arm corresponding to the mounting frame. The rotating operating member can adjust the rocker arm to different swinging states, so that one end of the rocker arm corresponding to the mounting frame directly or indirectly acts on one of the printing wheels to adjust the gap between the two printing wheels to achieve pressure regulation.

[0020] As a preferred technical solution of the utility model, the mounting frame is provided with a mounting groove corresponding to one of the printing wheel positions, a slide is provided in the mounting groove and guide rods located in the mounting groove are provided on both sides of the slide, a bearing sleeved outside the rotating shaft is provided in the slide, the pressure regulating mechanism corresponds to the position of the slide, a squeezing rod is provided at one end of the rocker arm of the pressure regulating mechanism corresponding to the mounting frame, a through hole connected to the mounting groove is provided on the mounting frame corresponding to the position of the squeezing rod, the spring is located in the through hole and the two ends of the spring are respectively abutted against the squeezing rod and the slide.

[0021] By adopting the above technical solution, the character printing effect can be guaranteed for packaging bags of different thicknesses. The operating part is rotated to make the cam surfaces of the cam abut against the rocker arm to achieve different swinging states of the rocker arm. The end of the rocker arm relative to the cam squeezes the spring and acts on the slide. The slide moves slightly along the direction of the guide rod and squeezes the bearing, so that the rotating shaft with the printing wheel moves slightly to adjust the clamping force of the two printing wheels on the packaging bag. To return to the previous gear, the operating part is rotated counterclockwise, the pressure on the slide is reduced, and the bearing recovers due to its own toughness. The bearing in this embodiment is a deep groove ball bearing.

[0022] A sealing machine, on which an improved printing mechanism is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0025] Figure 3 It is a schematic diagram of the structure of the cooperation of two printing wheels in the utility model;

[0026] Figure 4 It is a structural schematic diagram of the printing wheel in the utility model;

[0027] Figure 5 It is an exploded view of the printing wheel in the utility model;

[0028] Figure 6 It is a top view of the printing mechanism of the utility model;

[0029] Figure 7 It is a cross-sectional view of AA of the utility model;

[0030] Figure 8 It is a structural schematic diagram of the pressure regulating mechanism in the utility model;

[0031] Fig. 9 It is a cross-sectional view of BB of the present utility model.

[0032] Figure numerals: 1, printing wheel; 2, character particle one; 3, character particle two; 4, protruding characters; 5, character groove; 6, character plate; 7, groove; 8, inner retaining ring; 9, outer retaining ring; 10, threaded column; 11, heating tube; 12, temperature sensor; 13, rotating shaft; 14, collector ring; 15, carbon brush; 16, plug; 17, mounting bracket; 18, gear; 19, voltage regulating mechanism; 20, rocker arm; 21, operating part; 22, knob; 23, connecting shaft; 24, cam; 25, spring; 26, mounting groove; 27, slide seat; 28, guide rod; 29, bearing; 30, extrusion rod; 31, through hole. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0034] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 9 A printing mechanism and a sealing machine shown in the figure include a pair of printing wheels 1 arranged in an upper and lower manner, the printing wheels 1 are rotatably connected to the sealing machine, a character assembly is arranged between the two printing wheels 1, the character assembly includes a plurality of character particles 2 and a plurality of character particles 2 3 that engage with the character particles 1 2 to achieve character imprinting, a protruding character 4 is arranged on the surface of the character particles 1 2, and a character groove 5 that matches the shape of the protruding character 4 is arranged on the surface of the character particles 2 3, a plurality of character particles 1 2 or character particles 2 3 are arranged on the periphery of one of the printing wheels 1, and a plurality of character particles 2 3 or character particles 1 2 that engage with the character particles 1 2 or character particles 2 3 to achieve character imprinting are arranged on the periphery of the other printing wheel 1.

[0036] Character embossing is achieved by the engagement of character grain 1 2 and character grain 2 3. During the synchronous rotation of the two printing wheels 1, the protruding characters 4 of character grain 1 2 and the character grooves 5 of character grain 2 3 are plugged together, so that the packaging bag has a larger deformation amount. The packaging bag is preferably a film bag. The embossing effect is obvious and the characters are clear. Several groups of repeated character grains 1 2 or character grains 2 3 can be set to cover the entire printing wheel 1, or only one group can be set along the circumferential direction of the printing wheel 1, depending on the actual situation.

[0037] A character plate 6 is fixed or integrally provided on the printing wheel 1, and the character plate 6 is circumferentially provided with a plurality of grooves 7 for embedding the character grain 1 2 or the character grain 2 3, and the required character grains can be replaced as required to facilitate subsequent character printing.

[0038] The printing wheel 1 includes an inner retaining ring 8, an outer retaining ring 9 and a threaded column 10 located therebetween. The threaded column 10 is fixed or integrally arranged on the inner retaining ring 8. The character disk 6 is sleeved on the threaded column 10. The inner retaining ring 8 is threadedly connected to the outer retaining ring 9 through the threaded column 10 to fix the character disk 6, making disassembly and assembly more convenient and facilitating subsequent replacement of character particles.

[0039] In this embodiment, the threaded column 10 is a hollow threaded column 10 and the threaded column 10 extends to the inner hole of the outer retaining ring 9. A heating tube 11 is arranged in the threaded column 10, and a temperature sensor 12 for detecting the temperature of the heating tube 11 is also arranged. The printing temperature can be accurately controlled, which is beneficial to the deformation of the packaging bag and improves the character printing effect.

[0040] A rotating shaft 13 is provided at one end of the inner retaining ring 8 opposite to the outer retaining ring 9. The rotating shaft 13 is rotatably installed on the sealing machine. The rotating shaft 13 passes through the threaded column 10 and extends to the inner hole of the outer retaining ring 9. The heating tube 11 is located in the rotating shaft 13. A collector ring 14 and a carbon brush 15 cooperating with the collector ring 14 are provided at one end of the rotating shaft 13 opposite to the printing wheel 1.

[0041] The collector ring 14 and the carbon brush 15 are fixed in the sealing machine, and when the rotating shaft 13 rotates, the heating rod wire will not be entangled, thereby affecting the operation.

[0042] The rotating shaft 13 is hollow inside and has openings at both ends. A plug 16 for closing the opening is provided at one end of the rotating shaft 13 located at the outer retaining ring 9, so that the heating rod can be quickly installed while preventing temperature loss.

[0043] It also includes a mounting frame 17 fixed or integrally arranged in the sealing machine, and the printing wheel 1 is rotatably connected to the mounting frame 17 via a rotating shaft 13. A gear 18 is arranged on the rotating shaft 13 of each printing wheel 1, and the two gears 18 are meshed and linked. A printing drive mechanism is also provided in the sealing machine for driving any rotating shaft 13 to rotate. The gear 18 in this embodiment is a high-precision gear.

[0044] The printing drive mechanism in this embodiment can drive the rotating shaft 13 to rotate by means of a motor in cooperation with a gear 18 group, or the motor can drive the rotating shaft 13 to rotate by means of a pulley or a belt, and is not limited to the above methods.

[0045] A pressure regulating mechanism 19 is also provided between the two printing wheels 1, and the pressure regulating mechanism 19 includes a rocker arm 20 and an operating member 21. The rocker arm 20 swings relative to the mounting frame 17, and the rocker arm 20 is hinged to the sealing machine or the mounting frame 17. The operating member 21 includes a knob 22, a connecting shaft 23 and a cam 24. The connecting shaft 23 is rotatably connected to the sealing machine or the mounting frame 17, and the cam 24 and the knob 22 are respectively located at both ends of the connecting shaft 23. The cam 24 abuts against one end of the rocker arm 20, and a spring 25 is provided at one end of the rocker arm 20 corresponding to the mounting frame 17. Rotating the operating member 21 can adjust the different swinging states of the rocker arm 20, so that the end of the rocker arm 20 corresponding to the mounting frame 17 directly or indirectly acts on one of the printing wheels 1 to adjust the gap between the two printing wheels 1 to achieve pressure regulation.

[0046] The mounting frame 17 is provided with a mounting groove 26 corresponding to the position of one of the printing wheels 1, a slide 27 is provided in the mounting groove 26, and guide rods 28 located in the mounting groove 26 are provided on both sides of the slide 27, a bearing 29 sleeved on the outside of the rotating shaft 13 is provided in the slide 27, the pressure regulating mechanism 19 corresponds to the position of the slide 27, a squeezing rod 30 is provided at one end of the swing rod 20 of the pressure regulating mechanism 19 corresponding to the mounting frame 17, a through hole 31 connected to the mounting groove 26 is provided on the mounting frame 17 corresponding to the position of the squeezing rod 30, the spring 25 is located in the through hole 31, and the two ends of the spring 25 are respectively abutted against the squeezing rod 30 and the slide 27.

[0047] The character printing effect can be guaranteed for packaging bags of different thicknesses. The operating member 21 is rotated to make the cam surfaces of the cam 24 abut against the rocker arm 20 to achieve different swinging states of the rocker arm 20. The end of the rocker arm 20 relative to the cam 24 squeezes the spring 25 and acts on the slide 27. The slide 27 moves slightly along the direction of the guide rod 28 and squeezes the bearing 29, so that the rotating shaft 13 with the printing wheel 1 moves slightly to adjust the clamping force of the two printing wheels 1 on the packaging bag. To return to the previous gear, the operating member 21 is rotated counterclockwise, the pressure on the slide 27 is reduced, and the bearing 29 recovers due to its own toughness. The bearing 29 in this embodiment is a deep groove ball bearing 29.

[0048] A sealing machine comprises the above improved printing mechanism.

[0049] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A printing mechanism, comprising a pair of printing wheels (1) arranged in an upper and lower manner, wherein the printing wheels (1) are rotatably connected to a sealing machine, characterized in that: A character assembly is arranged between two printing wheels (1), the character assembly comprising a plurality of character particles (2) and a plurality of character particles (3) engaging with the character particles (2) to achieve character imprinting, the surface of the character particles (2) being provided with protruding characters (4), the surface of the character particles (3) being provided with character grooves (5) matching the shape of the protruding characters (4), one of the printing wheels (1) being arranged with a plurality of character particles (2) or character particles (3) on the periphery, and the other printing wheel (1) being arranged with a plurality of character particles (3) or character particles (2) engaging with the character particles (2) or character particles (3) to achieve character imprinting.

2. The printing mechanism according to claim 1, characterized in that: A character plate (6) is fixed or integrally arranged on the printing wheel (1), and a plurality of grooves (7) are arranged around the character plate (6) for embedding character grain one (2) or character grain two (3).

3. The printing mechanism according to claim 2, characterized in that: The printing wheel (1) comprises an inner retaining ring (8), an outer retaining ring (9) and a threaded column (10) located therebetween; the threaded column (10) is fixed to or integrally arranged on the inner retaining ring (8); the character disk (6) is sleeved on the threaded column (10); the inner retaining ring (8) is threadably connected to the outer retaining ring (9) via the threaded column (10) to fix the character disk (6).

4. The printing mechanism according to claim 3, characterized in that: The threaded column (10) is a hollow threaded column (10) and the threaded column (10) extends to the inner hole of the outer retaining ring (9). A heating tube (11) is arranged in the threaded column (10), and a temperature sensor (12) for detecting the temperature of the heating tube (11) is also arranged.

5. The printing mechanism according to claim 4, characterized in that: A rotating shaft (13) is arranged at one end of the inner retaining ring (8) opposite to the outer retaining ring (9), and the rotating shaft (13) is rotatably mounted on the sealing machine. The rotating shaft (13) passes through the threaded column (10) and extends to the inner hole of the outer retaining ring (9). The heating tube (11) is located in the rotating shaft (13). A collector ring (14) and a carbon brush (15) matched with the collector ring (14) are arranged at one end of the rotating shaft (13) opposite to the printing wheel (1).

6. The printing mechanism according to claim 5, characterized in that: The rotating shaft (13) is hollow inside and is provided with openings at both ends. A plug (16) for closing the opening is provided at one end of the rotating shaft (13) located on the outer retaining ring (9).

7. The printing mechanism according to claim 1, characterized in that: The invention also comprises a mounting frame (17) fixed or integrally arranged in the sealing machine, the printing wheel (1) being rotatably connected to the mounting frame (17) via a rotating shaft (13), a gear (18) being arranged on the rotating shaft (13) of each printing wheel (1), and the two gears (18) being meshed and linked, and a printing drive mechanism located in the sealing machine for driving any rotating shaft (13) to rotate.

8. The printing mechanism according to claim 7, characterized in that: A pressure regulating mechanism (19) is also provided between the two printing wheels (1), and the pressure regulating mechanism (19) comprises a swing rod (20) and an operating member (21). The swing rod (20) swings relative to the mounting frame (17), and the swing rod (20) is hinged to the sealing machine or the mounting frame (17). The operating member (21) comprises a knob (22), a connecting shaft (23) and a cam (24). The connecting shaft (23) is rotatably connected to the sealing machine or the mounting frame (17). The wheel (24) and the knob (22) are respectively located at two ends of the connecting shaft (23); the cam (24) abuts against one end of the swing rod (20); a spring (25) is provided at one end of the swing rod (20) corresponding to the mounting frame (17); the swing rod (20) can be adjusted to different swinging states by rotating the operating member (21), so that one end of the swing rod (20) corresponding to the mounting frame (17) directly or indirectly acts on one of the printing wheels (1) to adjust the gap between the two printing wheels (1) to achieve pressure regulation.

9. The printing mechanism according to claim 8, characterized in that: The mounting frame (17) is provided with a mounting groove (26) corresponding to a position of one of the printing wheels (1); a slide seat (27) is provided in the mounting groove (26), and guide rods (28) located in the mounting groove (26) are provided on both sides of the slide seat (27); a bearing (29) sleeved outside the rotating shaft (13) is provided in the slide seat (27); the pressure regulating mechanism (19) corresponds to the position of the slide seat (27); a squeezing rod (30) is provided at one end of the swing rod (20) of the pressure regulating mechanism (19) corresponding to the mounting frame (17); a through hole (31) communicating with the mounting groove (26) is provided on the mounting frame (17) corresponding to the squeezing rod (30); the spring (25) is located in the through hole (31), and two ends of the spring (25) are respectively in contact with the squeezing rod (30) and the slide seat (27).

10. A sealing machine, characterized in that: The invention comprises the printing mechanism described in any one of claims 1 to 9.

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