A granular heat-not-burn tobacco concave sealing device and method

Abstract

The application discloses a granular heating non-combustible tobacco concave sealing device, which comprises a support assembly, a sealing assembly, a smoke pipe, a sealing paper belt, the sealing assembly comprises a transmission gear, a transmission shaft, a guide sleeve mounting disc, a drum bearing seat, a smoke pipe conveying drum, a tray, a punch needle sleeve mounting disc, a composite punch needle cam, a punch needle assembly; the punch needle assembly comprises a punching punch needle, a cutting punch needle, a punch needle sleeve, a first reset spring, a second reset spring, a guide sleeve, a first air hole, a boss part, a protruding part and a groove; the second end of the cutting punch needle is provided with the protruding part, the upper end of the guide sleeve is provided with the groove, and the composite punch needle cam is provided with the first air hole; the application can produce an embedded concave seal, improve the sealing stability, prevent the circular sealing paper from being attached / adhered and being inclined or uneven due to pressure difference during the reciprocating movement of the punching punch needle, prevent the inclination of the punched circular sealing paper, improve the flatness and other precision, and improve the sealing stability.

Description

Technical Field

[0001] This invention relates to the technical field of granular heated non-combustible tobacco production equipment, specifically to a concave sealing device and method for granular heated non-combustible tobacco. Background Technology

[0002] For granular heated tobacco products, existing technologies CN110403227A discloses a more stable granular cigarette filling device, CN110419768A discloses an improved continuous granular filling device, and CN110419769A discloses a highly efficient and stable granular cigarette sealing device. However, the punch assembly of existing sealing devices still has problems with the accuracy and stability of the inclination and flatness of the circular sealing paper insertion, which need to be further improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a concave sealing device and method for granular heated non-combustible tobacco. Compared with the planar sealing of existing technologies, this invention adopts an embedded concave sealing method where the sealing paper is embedded in the tobacco tube. This overcomes the drawbacks of planar sealing in existing equipment, reduces the coaxiality requirements of the sealing paper and the tobacco tube, and solves the problem of glue overflow towards the circumference of the tobacco tube during the capping process, which is common in planar sealing. Simultaneously, it prevents the circular sealing paper from being attached / adhered to by the cutting punch, thus preventing tilting or unevenness. It produces an embedded concave sealing effect, improving sealing stability. Furthermore, it prevents the circular sealing paper from being attached / adhered to by air pressure / pressure difference during the reciprocating motion of the punch, thus preventing tilting of the circular sealing paper during insertion, improving flatness and other precision, and enhancing sealing stability.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A concave sealing device for granular heated non-combustible tobacco includes a support assembly 1, a sealing assembly 2, a tobacco tube 3, and a sealing paper tape 4. The support assembly includes a vertical support 11 and a horizontal support 12. The sealing assembly includes a transmission gear 21, a transmission shaft 22, an inlet sleeve mounting plate 23, a drum bearing seat 24, a tobacco tube conveying drum 25, a tray 26, a punch sleeve mounting plate 27, a composite punch cam 28, and a punch assembly 5. The transmission gear, drum bearing seat, tray, and tobacco tube conveying drum are also included. The wheel, the guide sleeve mounting plate, and the punch sleeve mounting plate are sequentially mounted on the drive shaft from bottom to top, and the composite punch cam is fixedly mounted on the transverse support; the composite punch cam is provided with a cutting curved groove and a driving curved groove; the punch assembly 5 is characterized in that: the punch assembly 5 includes a driving punch 51, a cutting punch 52, a punch sleeve 53, a first return spring 54, a second return spring 55, a guide sleeve 56, a first vent hole 57, a boss portion 521, a protrusion portion 522, and a groove 561, and the guide sleeve mounting plate is installed... An inlet sleeve is embedded in the plate, and a punch sleeve is embedded in the punch sleeve mounting plate. A driven punch is built into and passes through a cutting punch. A cutting punch is built into and passes through a punch sleeve 53. The driven punch or cutting punch is correspondingly positioned with the punch sleeve and inlet sleeve. A boss is provided at the first end of the cutting punch. A first return spring is fitted around the outer periphery of the driven punch, between the boss and the first end of the driven punch. A second return spring is fitted around the outer periphery of the cutting punch, between the boss and the punch sleeve. The spring, the top of the inserting punch and the cutting punch are respectively positioned in the inserting curved groove and the cutting curved groove of the composite punch cam, and operate under the control of the inserting curved groove and the cutting curved groove; the second end of the cutting punch is provided with a protrusion, and multiple protrusions are evenly distributed in the circumference; the upper end of the guide sleeve is provided with a groove, and the bottom of the groove accommodates the cut circular sealing paper 41; the composite punch cam is provided with a first vent hole, and the first vent hole is connected to the cavity where the top of the inserting punch is located.

[0006] Furthermore, the inlet sleeve 56 has a central through hole, the diameter of the groove 561 is equal to the outer diameter of the cutting punch 52, the diameter of the central through hole is greater than the outer diameter of the inserting punch 51 and less than the diameter of the groove, and the outer diameter of the inserting punch is equal to the inner diameter of the cutting punch.

[0007] Furthermore, a second vent hole 511 is provided in the center of the punch 51, with the first end of the second vent hole connected to the first vent hole 57 and the second end connected to the groove 561.

[0008] Furthermore, a receiving groove is provided at the bottom of the groove 561, and an inner liner ring 562 is installed in the receiving groove. The yield strength and hardness of the inner liner ring are both less than the yield strength and hardness of the guide sleeve 56.

[0009] Furthermore, the inner liner ring 562 is made of resin or plastic, and the guide sleeve 56 is made of steel.

[0010] Furthermore, the inner diameter of the inner liner ring 562 is equal to the diameter of the central through hole, and the outer diameter of the inner liner ring is equal to the diameter of the groove 561.

[0011] This invention discloses a concave sealing device and method for granular heated non-combustible tobacco. Compared to the planar sealing technology of the prior art, this invention adopts an embedded concave sealing method where the sealing paper is embedded in the tobacco tube. This overcomes the drawbacks of planar sealing in existing equipment, reduces the coaxiality requirements of the sealing paper and the tobacco tube, and solves the problem of glue overflow towards the circumference of the tobacco tube end during the capping process in planar sealing. Simultaneously, it prevents the circular sealing paper from being attached / adhered to by the cutting punch, thus preventing tilting or unevenness. It produces an embedded concave sealing effect, improving sealing stability. Furthermore, it prevents the circular sealing paper from being attached / adhered to by air pressure / pressure difference during the reciprocating motion of the punch, thus preventing tilting of the circular sealing paper during insertion, improving flatness and other precision, and enhancing sealing stability. Attached Figure Description

[0012] Figure 1 This is an isometric structural schematic diagram of the concave sealing device for granular heated non-combustible tobacco according to the present invention;

[0013] Figure 2 This is a schematic cross-sectional view of the concave sealing device for granular heated non-combustible tobacco according to the present invention.

[0014] Figure 3 This is a schematic diagram of an embodiment of the punch assembly of the present invention;

[0015] Figure 4 This is a schematic diagram of another embodiment of the punch assembly of the present invention.

[0016] In the diagram: 1. Support assembly; 2. Sealing assembly; 3. Smoke pipe; 4. Sealing paper tape; 5. Punch assembly; 11. Vertical support; 12. Horizontal support; 21. Transmission gear; 22. Transmission shaft; 23. Inlet sleeve mounting plate; 24. Drum bearing seat; 25. Smoke pipe conveying drum; 26. Tray; 27. Punch sleeve mounting plate; 28. Composite punch cam; 41. Circular sealing paper; 51. Inserting punch; 52. Cutting punch; 53. Punch sleeve; 54. First return spring; 55. Second return spring; 56. Inlet sleeve; 57. First vent hole; 511. Boss; 521. Protrusion; 522. Groove; 561. Inner liner ring; 562. Detailed Implementation

[0017] To make the technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention, and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, only the parts / structures related to the present invention are shown in the accompanying drawings. Other related parts can be referred to with ordinary design. In the absence of conflict, the embodiments and technical features in the embodiments of the present invention can be combined with each other to obtain new embodiments.

[0018] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. Furthermore, unless otherwise defined, the technical or scientific terms used in the description of this invention should have the ordinary meaning understood by those skilled in the art.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] like Figure 1-4As shown, a concave sealing device for granular heated non-combustible tobacco includes a support assembly 1, a sealing assembly 2, a tobacco tube 3, and a sealing paper tape 4. The support assembly 1 includes a vertical support 11 and a horizontal support 12. The sealing assembly 2 includes a transmission gear 21, a transmission shaft 22, an inlet sleeve mounting plate 23, a drum bearing seat 24, a tobacco tube conveying drum 25, a tray 26, a punch sleeve mounting plate 27, a composite punch cam 28, and a punch assembly 5. The punch sleeve mounting plate 27 is installed sequentially from bottom to top on the drive shaft 22. The composite punch cam 28 is fixedly mounted on the horizontal bracket 12 and remains stationary. Its center is kept on the same axis as the axis of the smoke pipe conveying drum 25 and the drive shaft 22, and it drives the sealing assembly 2 to rotate through the transmission gear 21. The composite punch cam 28 is provided with a cutting curved groove and an inserting curved groove. The inner side of the vertical bracket 11 is provided with a paper tape guide groove, and the sealing paper tape 4 is provided in the paper tape guide groove. The smoke pipe conveying drum 25 The outer peripheral surface is provided with multiple flue slots for accommodating the flue pipe 3; characterized in that: the punch assembly 5 includes a driving punch 51, a cutting punch 52, a punch sleeve 53, a first return spring 54, a second return spring 55, an inlet sleeve 56, a first vent hole 57, a boss portion 521, a protrusion portion 522, and a groove 561; an inlet sleeve 56 is embedded in the inlet sleeve mounting plate 23; a punch sleeve 53 is embedded in the punch sleeve mounting plate 27; the driving punch 51 is built into and passes through the cutting punch 52; the cutting punch 52... The cutting punch 52 is built into and passes through the punch sleeve 53. The inserting punch 51 and the cutting punch 52 are correspondingly set with the punch sleeve 53 and the guide sleeve 56. The first end of the cutting punch 52 is provided with a boss 521. A first return spring 54 is sleeved on the outer periphery of the inserting punch 51 and between the boss 521 and the first end of the inserting punch 51. A second return spring 55 is sleeved on the outer periphery of the cutting punch 52 and between the boss 521 and the punch sleeve 53. The top part of the inserting punch 51 and the cutting punch 52 are also provided. The composite punch cam 28 is positioned in the insertion curved groove and the cutting curved groove, and operates under the control of the insertion curved groove and the cutting curved groove; the second end of the cutting punch 52 is provided with a protrusion 522, and multiple protrusions 522 are evenly distributed in the circumferential direction; the upper end of the guide sleeve 56 is provided with a groove 561, and the bottom of the groove 561 accommodates the cut circular sealing paper 41; the composite punch cam 28 is provided with a first vent hole 57, and the first vent hole 57 is connected to the cavity where the top of the insertion punch 51 is located.

[0021] The specific structure of the cutting curved groove and the punching curved groove provided on the composite punch cam 28 can be found in the prior art CN110403227A, CN110419768A or CN110419769A, which are incorporated herein by reference.

[0022] While the sealing assembly 2 rotates synchronously, during the operation of the sealing assembly 2, the granules in the upper station and the glue applied to the port of the flue pipe 3 are continuously transferred to the flue pipe groove of the flue pipe conveying drum 25 at this station via the transfer drum. Under the action of the cutting curved groove working surface of the composite punch cam 28, the cutting punch 52 moves vertically downward in an axial linear motion and quickly and accurately cuts the sealing paper strip 4 into a circular sealing paper 41 and positions it in the groove 561 of the guide sleeve 56. Then, the cutting punch 52 is positioned in the cutting curved groove of the second return spring 55 and the composite punch cam 28. Under the action of the action, it quickly resets; under the action of ...

[0023] This invention improves the design of the punch assembly 5. Specifically, the second end of the cutting punch 52 is provided with a protrusion 522, and multiple protrusions 522 are evenly distributed circumferentially. This reduces the contact area during cutting and prevents the circular sealing paper 41 from being attached / adhered to the cutting punch 52, thus preventing tilting or unevenness. The upper end of the guide sleeve 56 is provided with a groove 561, and the bottom of the groove 561 accommodates the cut circular sealing paper 41, which can produce a concave sealing effect and improve sealing stability. The composite punch cam 28 is provided with a first vent hole 57, which is connected to the cavity where the top of the punch 51 is located. This can prevent the circular sealing paper 41 from being attached / adhered due to air pressure / pressure difference during the reciprocating motion of the punch 51, thus preventing tilting or unevenness. This can prevent the tilt of the circular sealing paper during punching, improve flatness and other precision, and improve stability.

[0024] Furthermore, the guide sleeve 56 has a central through hole, the diameter of the groove 561 is equal to the outer diameter of the cutting punch 52, the diameter of the central through hole is greater than the outer diameter of the insertion punch 51 and less than the diameter of the groove 561, and the outer diameter of the insertion punch 51 is equal to the inner diameter of the cutting punch 52.

[0025] like Figure 4As shown, in one embodiment, a second vent hole 511 is provided at the center of the punch 51. The first end of the second vent hole 511 is connected to the first vent hole 57, and the second end is connected to the groove 561. This can prevent the circular sealing paper 41 from sticking or becoming uneven due to air pressure / pressure difference during the reciprocating motion of the punch 51, thereby further preventing the tilt of the circular sealing paper during punching, improving the flatness and other precision, and improving stability.

[0026] Furthermore, a receiving groove is provided at the bottom of the groove 561, and an inner liner ring 562 is installed in the receiving groove. The yield strength and hardness of the inner liner ring 562 are both less than the yield strength and hardness of the guide sleeve 56.

[0027] The inner liner ring 562 is made of engineering resin or polymer plastic, and the guide sleeve 56 is made of steel or hard alloy.

[0028] The present invention, through the design of the inner lining ring 562, uses non-metallic resin or plastic, which can reduce the hard / rigid friction of the punch 51 on the circular sealing paper 41 during punching, thereby further preventing the tilt of the circular sealing paper during punching, improving flatness and other precision, and improving sealing stability.

[0029] The inner diameter of the inner liner ring 562 is equal to the diameter of the central through hole, and the outer diameter of the inner liner ring 562 is equal to the diameter of the groove 561.

[0030] The present invention provides a concave sealing device and method for granular heated non-combustible tobacco. Compared with the planar sealing technology, the present invention adopts an embedded concave sealing method in the tobacco tube, which overcomes the drawbacks of the planar sealing in the existing equipment, reduces the coaxiality requirements of the sealing paper and the tobacco tube, and solves the problem of glue overflowing towards the circumference of the tobacco tube port during the capping process due to the sealing paper and the tobacco tube port being easily generated during the planar sealing process.

[0031] At the same time, it can prevent the circular sealing paper 41 from being attached / adhered to by the cutting punch 52, thus preventing tilting or unevenness. It can produce an embedded concave sealing effect, improve sealing stability, and prevent the circular sealing paper 41 from being attached / adhered to by air pressure / pressure difference during the reciprocating motion of the punch 51, thus preventing the tilt of the circular sealing paper during injection, improving flatness and other precision, and improving sealing stability.

[0032] The above embodiments are illustrative of the present invention and not intended to limit the invention. It is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concave sealing device for granular heated non-combustible tobacco, comprising a support assembly (1), a sealing assembly (2), a tobacco pipe (3), and a sealing paper tape (4); the support assembly includes a vertical support (11) and a horizontal support (12), and the sealing assembly includes a transmission gear (21), a transmission shaft (22), an inlet sleeve mounting plate (23), a drum bearing seat (24), a tobacco pipe conveying drum (25), a tray (26), a punch sleeve mounting plate (27), a composite punch cam (28), and a punch assembly (5). The transmission gear, drum bearing seat, tray, tobacco pipe conveying drum, inlet sleeve mounting plate, and punch sleeve mounting plate are sequentially mounted on the transmission shaft from bottom to top, and the composite punch cam is fixedly mounted on the horizontal support; the composite punch cam is provided with a cutting curved groove and an inserting curved groove. Its features are: The punch assembly (5) includes a driving punch (51), a cutting punch (52), a punch sleeve (53), a first return spring (54), a second return spring (55), an inlet sleeve (56), a first vent hole (57), a boss (521), a protrusion (522), and a groove (561). An inlet sleeve is embedded in the inlet sleeve mounting plate, and a punch sleeve is embedded in the punch sleeve mounting plate. The driving punch is built into and passes through the cutting punch, and the cutting punch is built into and passes through the punch sleeve 53. The driving punch or the cutting punch is set one-to-one with the punch sleeve and the inlet sleeve. The first end of the cutting punch is provided with a boss. A first return spring is sleeved on the outer periphery of the driving punch and located between the boss and the first end of the driving punch. A second return spring is sleeved on the outer periphery between the boss and the punch sleeve. The tops of the punch and the cutting punch are respectively positioned in the punching curved groove and the cutting curved groove of the composite punch cam, and run under the control of the punching curved groove and the cutting curved groove. The second end of the cutting punch is provided with a protrusion. Multiple protrusions are evenly distributed along the circumference. The upper end of the guide sleeve is provided with a groove. The bottom of the groove accommodates the cut circular sealing paper (41). The composite punch cam is provided with a first vent hole. The first vent hole is connected to the cavity where the top of the punch is located. The center of the punch (51) is provided with a second vent hole (511). The first end of the second vent hole is connected to the first vent hole (57), and the second end is connected to the groove (561).

2. The concave sealing device for granular heated non-combustible tobacco as described in claim 1, characterized in that, The inlet sleeve (56) has a central through hole, the diameter of the groove (561) is equal to the outer diameter of the cutting punch (52), the diameter of the central through hole is greater than the outer diameter of the punch (51) and less than the diameter of the groove, and the outer diameter of the punch is equal to the inner diameter of the cutting punch.

3. The concave sealing device for granular heated non-combustible tobacco as described in claim 1, characterized in that, The bottom of the groove (561) is provided with a receiving groove, and an inner liner ring (562) is installed in the receiving groove. The yield strength and hardness of the inner liner ring are both less than the yield strength and hardness of the guide sleeve (56).

4. The concave sealing device for granular heated non-combustible tobacco as described in claim 3, characterized in that, The inner liner ring (562) is made of resin or plastic, and the inlet sleeve (56) is made of steel.

5. The concave sealing device for granular heated non-combustible tobacco as described in claim 4, characterized in that, The inner diameter of the inner liner ring (562) is equal to the diameter of the central through hole, and the outer diameter of the inner liner ring is equal to the diameter of the groove (561).

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