Gas cylinder puncturing device for coffee machine

Abstract

The invention discloses a gas cylinder puncturing device for a coffee machine, the gas cylinder puncturing device is matched with the coffee machine for use, the gas cylinder puncturing device comprises a mounting frame, a gas cylinder positioning mechanism, a driving mechanism and a puncturing mechanism, the gas cylinder positioning mechanism comprises a mounting groove matched with a gas cylinder in a limiting manner, and the driving mechanism is used for driving the gas cylinder to lift and translate; the puncturing mechanism is matched with the gas cylinder and used for puncturing the gas cylinder, and after puncturing, gas in the gas cylinder is used for being conveyed into a water bin of the coffee machine; the driving mechanism comprises a lifting driving assembly and a horizontal driving assembly, the lifting driving assembly is connected with the gas cylinder positioning mechanism and used for driving the gas cylinder to ascend and descend in the height direction, and the horizontal driving assembly is matched with the gas cylinder and used for driving the gas cylinder to horizontally move in the horizontal direction. According to the gas cylinder puncturing device, the gas cylinder puncturing action is automatically carried out, the traditional puncturing operation of manually screwing the gas cylinder is replaced, the defects of manual operation are overcome, and the gas cylinder puncturing device has the advantages of being convenient to operate, convenient to replace the gas cylinder, high in puncturing efficiency, high in safety, little in gas leakage and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of daily necessities, and particularly relates to a gas cylinder puncturing device for a coffee machine. Background Art

[0002] Currently, coffee machines on the market are mainly divided into two categories according to the pressurization principle: active pressurization and passive pressurization. Different principles directly affect the extraction effect and applicable scenarios of coffee.

[0003] Active pressurization type coffee machines are mainly divided into the following types: 1. Pump pressure type (high-pressure extraction), the principle is to actively apply pressure through an electric pump or a piston device, forcing hot water to quickly pass through the coffee powder layer. Representatives are semi-automatic / full-automatic Italian coffee machines and capsule coffee machines, etc.; 2. Manual pneumatic type, the principle is to generate pressure through manual operation (such as piston pressing down, steam expansion). The representative model is the moka pot; 3. Steam type, the principle is to utilize the expansion of high-temperature steam to generate pressure. The representative is the steam coffee machine.

[0004] Passive pressurization type coffee machines are mainly divided into the following types: 1. Drip filter type (gravity-driven), the principle is that hot water naturally penetrates the coffee powder by gravity; 2. Siphon type (vacuum principle), the principle is that the water expands and rises when heated at the bottom, mixes with the coffee powder and then cools to form a vacuum, and the liquid falls back; 3. French press (soaking + filtering), the principle is to filter the coffee powder after soaking.

[0005] The above-mentioned active pressurization type coffee machines have the disadvantage of large volume, while the passive pressurization type coffee machines have the disadvantages of inability to pressurize and inability to bring out the fragrance of coffee. There appears a cartridge type portable coffee machine on the market. Its principle is to release high-pressure gas from a gas cylinder to push hot water through the coffee powder. It does not need to use a pump or a piston device, so it has the advantage of small volume. At the same time, it can provide the air pressure required for extraction and can extract the fragrance of coffee.

[0006] However, the gas cylinder used in the above-mentioned coffee machine needs to puncture the bottle mouth before the gas can be output. The existing puncturing method is generally achieved by manually rotating the gas cylinder, that is, it is punctured during the process of installing the gas cylinder. There are problems such as troublesome manual operation and easy gas leakage caused by improper operation. Summary of the Invention

[0007] The purpose of the present invention is to provide a gas cylinder puncturing device for a coffee machine, which can at least solve one of the above problems.

[0008] According to one aspect of the present invention, there is provided a gas cylinder puncturing device for a coffee machine, which is used in conjunction with the coffee machine. The gas cylinder puncturing device includes a mounting frame, a gas cylinder positioning mechanism, a driving mechanism, and a puncturing mechanism. The gas cylinder positioning mechanism includes a mounting groove that is in limit cooperation with the gas cylinder. The driving mechanism is used to drive the gas cylinder to move up and down and horizontally. The puncturing mechanism cooperates with the gas cylinder and is used to puncture the gas cylinder. After puncturing, the gas in the gas cylinder is used to be transported into the water tank of the coffee machine;

[0009] The driving mechanism includes a lifting driving component and a horizontal driving component. The lifting driving component is connected to the gas cylinder positioning mechanism and is used to drive the gas cylinder to move up and down in the height direction. The horizontal driving component cooperates with the gas cylinder and is used to drive the gas cylinder to move horizontally;

[0010] The lifting driving component includes a first driving member, a first transmission module, and a movable frame. The movable frame is movably installed on the mounting frame. The first driving member is installed on the mounting frame and is in transmission connection with the first transmission module. The first transmission module is connected to the movable frame, and the movable frame is connected to the gas cylinder positioning mechanism;

[0011] The horizontal driving component includes a second driving member, a second transmission module, and a top cylinder. The second driving member is in transmission connection with the second transmission module. The second transmission module is connected to the top cylinder, and the top cylinder cooperates with the gas cylinder.

[0012] In some embodiments, the first transmission module includes a first screw rod and a nut. The first screw rod is in transmission connection with the driving end of the first driving member. The nut is sleeved on the outer periphery of the first screw rod and is connected to the movable frame.

[0013] In some embodiments, the lifting driving component further includes an elastic buffer module. The elastic buffer module includes a connecting member and a first spring. The nut and the movable frame are connected through the connecting member. The first spring is sleeved on the outer periphery of the connecting member and is located between the nut and the movable frame.

[0014] In some embodiments, the lifting driving component further includes a guiding module. The movable frame is movably installed on the mounting frame through the guiding module. The guiding module includes a guiding sleeve installed on the mounting frame and a guiding rod sleeved on the guiding sleeve and connected to the movable frame.

[0015] In some embodiments, the horizontal driving component further includes a first mounting seat. The first mounting seat is connected to the gas cylinder positioning mechanism. The second transmission module includes a first bevel gear, a second bevel gear, and a second screw rod. The first bevel gear is connected to the driving end of the second driving member. The second bevel gear meshes with the first bevel gear. The second screw rod is sleeved on the second bevel gear. The first bevel gear and the second bevel gear are both installed on the first mounting seat. The top cylinder is movably sleeved on the outer periphery of the second screw rod and is in sliding cooperation with the first mounting seat.

[0016] In some embodiments, the top cylinder is provided with a second profiling groove that is in limit cooperation with the tail of the gas cylinder, and a magnetic attraction member that cooperates with the gas cylinder is provided at the bottom of the second profiling groove.

[0017] In some embodiments, the gas cylinder positioning mechanism includes an outer bracket and an inner bracket. The outer bracket is provided with a cavity and is respectively connected to the puncturing mechanism and the horizontal driving assembly. The inner bracket is sleeved inside the outer bracket and its bottom is connected to the movable frame. The top of the inner bracket is provided with a first profiling groove that is in limit cooperation with the gas cylinder, and the first profiling groove and the outer bracket jointly enclose an installation groove.

[0018] In some embodiments, the inner bracket includes a top block, a base, a second spring, and a guide pin. The top block is movably installed above the base and is guided by the guide pin. A first limiting groove is provided at the bottom of the top block, and the second spring is installed in the first limiting groove and abuts against the top block and the base respectively.

[0019] In some embodiments, the puncturing mechanism includes a second mounting seat, a puncturing needle, and an output pipe. The second mounting seat is provided with a through hole that cooperates with the mouth of the gas cylinder. The puncturing needle is installed in the second mounting seat and its head extends into the through hole. The first end of the output pipe extends into the second mounting seat, and the second end is connected to the gas path system of the coffee machine and passes the gas in the gas cylinder into the water tank of the coffee machine. A gas path channel is provided in the center of the puncturing needle, and the gas path channel is communicated with the output pipe.

[0020] In some embodiments, it further includes a first sensing mechanism and a second sensing mechanism. The first sensing mechanism includes a first sensor installed on the mounting frame and a first sensing member installed on the movable frame and cooperating with the first sensor. The second sensing mechanism includes a second sensor installed on the mounting frame and a second sensing member installed on the top cylinder and cooperating with the second sensor.

[0021] Advantages of the present invention:

[0022] The present invention provides a gas cylinder puncturing device for a coffee machine with a brand-new structure. The gas cylinder puncturing device for the coffee machine realizes the automatic puncturing operation of the gas cylinder, replaces the traditional manual operation of screwing the gas cylinder for puncturing, avoids the defects of manual operation, and has many advantages such as convenient operation, convenient gas cylinder replacement, high puncturing efficiency, high safety, and less gas leakage. Description of the drawings

[0023] Figure 1 is a three-dimensional structural schematic diagram of the gas cylinder puncturing device of the present invention;

[0024] Figure 2 is Figure 1 the three-dimensional structural schematic diagram of the gas cylinder puncturing device shown with the gas cylinder omitted;

[0025] Figure 3 isFigure 2 The top view structural schematic diagram shown

[0026] Figure 4 is Figure 3 The sectional view structural schematic diagram in the A-A direction shown

[0027] Figure 5 is Figure 4 The enlarged structural schematic diagram at position B shown

[0028] Figure 6 is Figure 2 One of the three-dimensional structural schematic diagrams of the partial structure shown

[0029] Figure 7 is Figure 2 Another three-dimensional structural schematic diagram of the partial structure shown

[0030] Figure 8 The explosion structural schematic diagram of the gas cylinder positioning mechanism of the present invention

[0031] Figure 9 The three-dimensional structural schematic diagram of the coffee machine equipped with the gas cylinder puncturing device of the present invention

[0032] Figure 10 is Figure 9 The three-dimensional structural schematic diagram of the coffee machine with some structures omitted shown

[0033] Figures 1-10Reference numerals in the figures: 100 - water sump; 200 - coffee powder holder; 300 - gas circuit system; 400 - gas cylinder puncturing device; 500 - gas cylinder; 300a - intake pipe; 1 - gas cylinder positioning mechanism; 2 - driving mechanism; 3 - puncturing mechanism; 4 - mounting bracket; 5 - first sensing mechanism; 6 - second sensing mechanism; 10 - mounting groove; 11 - outer bracket; 12 - inner bracket; 21 - lifting drive assembly; 22 - horizontal drive assembly; 31 - second mounting seat; 32 - puncturing needle; 33 - output pipe; 51 - first sensor; 52 - first sensing element; 61 - second sensor; 62 - second sensing element; 121 - top block; 122 - base; 123 - second spring; 124 - guide pin; 211 - first driving member; 212 - first transmission module; 213 - guiding module; 214 - movable frame; 215 - elastic buffer module; 221 - second driving member; 222 - second transmission module; 223 - ejector cylinder; 224 - first mounting seat; 225 - magnetic attracting member; 311 - through hole; 312 - second limiting groove; 321 - gas circuit passage; 121a - first profiling groove; 121b - first limiting groove; 212a - first screw; 212b - nut; 213a - guiding sleeve; 213b - guiding rod; 215a - connecting member; 215b - first spring; 222a - first bevel gear; 222b - second bevel gear; 222c - second screw; 223a - second profiling groove. Detailed implementation mode

[0034] The present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Figures 1-8 Schematically shows a gas cylinder puncturing device for a coffee machine according to an embodiment of the present invention.

[0036] As Figures 1-8 shown, the gas cylinder puncturing device for a coffee machine includes a gas cylinder positioning mechanism ①, a driving mechanism ② and a puncturing mechanism ③. The gas cylinder positioning mechanism ① includes a mounting groove ⑩ that is in limit cooperation with the gas cylinder 500. The driving mechanism ② is used to drive the gas cylinder 500 to lift and translate. The puncturing mechanism ③ cooperates with the gas cylinder 500 and is used to puncture the gas cylinder 500. After puncturing, the gas in the gas cylinder 500 can be introduced into the water sump 100 of the coffee machine;

[0037] The driving mechanism ② includes a lifting drive assembly 21 and a horizontal drive assembly 22. The lifting drive assembly 21 is connected to the gas cylinder positioning mechanism ① and is used to drive the gas cylinder 500 to lift in the height direction. The horizontal drive assembly 22 cooperates with the gas cylinder 500 and is used to drive the gas cylinder ⑤ to translate in the horizontal direction.

[0038] Preferably, the gas cylinder puncturing device for a coffee machine further includes a mounting bracket 4. The lifting drive assembly 21 includes a first drive member 211, a first transmission module 212, a guiding module 213, and a movable bracket 214. The movable bracket 214 is movably mounted on the mounting bracket 4 through the guiding module 213. The first drive member 211 is mounted on the mounting bracket 4 and is in transmission connection with the first transmission module 212. The first transmission module 212 is connected to the movable bracket 214, and the movable bracket 214 is connected to the gas cylinder positioning mechanism 1.

[0039] More preferably, the first drive member 211 in this embodiment is a servo motor.

[0040] Preferably, the guiding module 213 includes a guiding sleeve 213a mounted on the mounting bracket 4 and a guiding rod 213b sleeved on the guiding sleeve 213a and fixedly connected to the movable bracket 214.

[0041] More preferably, the number of both the guiding rod 213b and the guiding sleeve 213a can be four.

[0042] Preferably, the first transmission module 212 includes a first screw rod 212a and a nut 212b. The first screw rod 212a is in transmission connection with the drive end of the first drive member 211 through a coupling or the like. The nut 212b is sleeved on the outer periphery of the first screw rod 212a and is connected to the movable bracket 214.

[0043] Preferably, the lifting drive assembly 21 further includes an elastic buffer module 215. The elastic buffer module 215 includes a connecting member 215a and a first spring 215b. The nut 212b and the movable bracket 214 are connected through the connecting member 215a. The first spring 215b is sleeved on the outer periphery of the connecting member 215a and is located between the nut 212b and the movable bracket 214.

[0044] More preferably, the connecting member 215a is a screw and the number is four.

[0045] The connecting member 215a of the elastic buffer module 215 serves as a connecting function, while the first spring 215b serves as a buffering function. Since the movable bracket 214 is movable and the gas cylinder positioning mechanism 1 is arranged above the movable bracket 214, when installing the gas cylinder 500, due to the certain gravity of the gas cylinder 500 and some external forces applied by the user, these forces will act on the gas cylinder positioning mechanism 1 and then transfer to the movable bracket 214. The first spring 215b of the elastic buffer module 215 can convert these forces into spring elastic force to play a buffering role. The elastic buffer module 215 in this embodiment has two functions of connection and buffering, with a small volume and strong functionality.

[0046] Preferably, the gas cylinder positioning mechanism 1 includes an outer bracket 11 and an inner bracket 12. The outer bracket 11 is provided with a cavity and is respectively connected to the puncturing mechanism 3 and the horizontal driving assembly 22. The inner bracket 12 is sleeved inside the outer bracket 11 and its bottom is connected to the movable frame 214. A first profiling groove 121a for limiting and cooperating with the gas cylinder 500 is formed at the top of the inner bracket 12. The first profiling groove 121a and the outer bracket 11 jointly enclose an installation groove 10.

[0047] Preferably, the inner bracket 12 includes a top block 121, a base 122, a second spring 123 and a guide pin 124. The top block 121 is movably installed above the base 122 and is guided by the guide pin 124. One end of the guide pin 124 is threadedly connected to the base 122, and the other end is slidably matched with the top block 121. A first limiting groove 121b is formed at the bottom of the top block 121. The second spring 123 is installed in the first limiting groove 121b and abuts against the top block 121 and the base 122 respectively.

[0048] Preferably, the horizontal driving assembly 22 includes a second driving member 221, a second transmission module 222 and a top cylinder 223. The second driving member 221 is in transmission connection with the second transmission module 222. The second transmission module 222 is connected to the top cylinder 223. The top cylinder 223 cooperates with the gas cylinder 500.

[0049] More preferably, the second driving member 221 of this embodiment is a servo motor.

[0050] Preferably, the horizontal driving assembly 22 further includes a first mounting seat 224. The first mounting seat 224 is connected to the outer bracket 11. The second transmission module 222 includes a first bevel gear 222a, a second bevel gear 222b and a second screw 222c. The first bevel gear 222a is coaxially connected to the driving end of the second driving member 221. The second bevel gear 222b meshes with the first bevel gear 222a. The second screw 222c is sleeved on the second bevel gear 222b. The first bevel gear 222a and the second bevel gear 222b are rotatably installed on the first mounting seat 224. The top cylinder 223 is movably sleeved on the outer periphery of the second screw 222c and is slidably matched with the first mounting seat 224.

[0051] Preferably, the top cylinder 223 is provided with a second profiling groove 223a that is in limit fit with the tail of the gas cylinder 500, and a magnetic attraction member 225 that cooperates with the gas cylinder 500 is provided at the bottom of the second profiling groove 223a. Thus, the magnetic attraction member 225 is a magnetic sheet, and its function is that when the gas in the gas cylinder 500 is used up and needs to be replaced, etc., when the gas cylinder 500 needs to be taken out of the installation groove 10, the horizontal drive assembly 22 works, driving the top cylinder 223 to retreat and reset. At this time, the magnetic attraction member 225 will attract the gas cylinder 500 and drive the gas cylinder 500 to retreat together. The top seat will also retreat and reset under the action of the second spring 123. At this time, the lifting drive assembly 21 can drive the inner bracket 12 and the gas cylinder 500 to rise together.

[0052] Preferably, the gas cylinder puncturing device for a coffee machine further includes a first sensing mechanism 5 and a second sensing mechanism 6. The first sensing mechanism 5 includes a first sensor 51 installed on the mounting frame 4 and a first sensing member 52 installed on the movable frame 214 and cooperating with the first sensor 51. The second sensing mechanism 6 includes a second sensor 61 installed on the mounting frame 4 and a second sensing member 62 installed on the top cylinder 223 and cooperating with the second sensor 61.

[0053] As a further preference, both the first sensor 51 and the second sensor 61 are a pair. A pair of first sensors 51 are arranged on the upper and lower sides of the first sensing member 52, and a pair of second sensors 61 are arranged on the left and right sides of the second sensing member 62. The first sensor 51 and the second sensor 61 are commercially available microswitches, proximity switches, or photoelectric sensors, etc. The first sensing member 52 and the second sensing member 62 are sheet-shaped sensing members.

[0054] Preferably, the puncturing mechanism 3 includes a second mounting seat 31, a puncturing needle 32, and an output pipe 33. The second mounting seat 31 is provided with a through hole 311 that cooperates with the mouth of the gas cylinder 500. The puncturing needle 32 is installed in the second mounting seat 31 and its head extends into the through hole 311. A second limiting groove 312 that is in limit fit with the output pipe 33 is provided in the second mounting seat 31. The first end of the output pipe 33 extends into the second limiting groove 312 of the second mounting seat 31, and the second end is connected to the gas path system 300 of the coffee machine and passes the gas in the gas cylinder 500 into the water tank 100 of the coffee machine to realize the output of the gas in the gas cylinder 500.

[0055] Preferably, a gas path channel 321 that communicates with the output pipe 33 is provided at the center of the puncturing needle 32.

[0056] The working principle of the gas cylinder puncturing device for a coffee machine of the present invention is as follows:

[0057] First, place the gas cylinder 500 into the installation groove 10. Then, the lifting drive assembly 21 operates. The first driving member 211 drives the first screw rod 212a to rotate, driving the nut 212b to move downward along the first screw rod 212a. Since the nut 212b is connected to the movable frame 214, and the movable frame 214 is connected to the inner bracket 12, the downward movement of the nut 212b will pull the movable frame 214 and the inner bracket 12 to move downward together. During the movement, the guide rod 213b moves relative to the guide sleeve 213a, playing a guiding role to ensure the smooth operation of the downward movement. The first sensing mechanism 5 plays a position detection role to ensure accurate downward movement to the specified position. When the inner bracket 12 moves down to the specified position, the mouth of the gas cylinder 500 is exactly aligned with the through hole 311 of the puncturing mechanism 3. At this time, the lifting drive assembly 21 stops operating; the horizontal drive assembly 22 operates. The second driving member 221 drives the first bevel gear 222a to rotate, and the first bevel gear 222a drives the second bevel gear 222b to rotate, causing the second screw rod 222c to move relative to the second bevel gear 222b in the direction towards the top cylinder 223. Since the top cylinder 223 is connected to the screw rod, the translation of the second screw rod 222c will drive the top cylinder 223 to translate. The upper end surface of the second mounting seat 31 plays a guiding role during the translation of the top cylinder 223. After the top cylinder 223 translates to contact the gas cylinder 500, the second profiling groove 223a fits with the tail of the gas cylinder 500. Continuing to translate the top cylinder 223 will push the gas cylinder 500 to translate together. The mouth of the gas cylinder 500 extends into the through hole 311 of the puncturing mechanism 3 and contacts the puncturing needle 32 to complete puncturing.

[0058] When the gas in the gas cylinder 500 is used up and the gas cylinder 500 needs to be replaced, or for other reasons, the gas cylinder 500 needs to be taken out, the horizontal drive assembly 22 operates first. The second driving member 221 operates, causing the second screw rod 222c to move relative to the second bevel gear 222b in the direction away from the top cylinder 223, driving the top cylinder 223 to translate and reset. Since a magnetic component 225 is arranged in the second profiling groove 223a of the top cylinder 223, at this time, the gas cylinder 500 is adsorbed on the top cylinder 223. The translation of the top cylinder 223 will drive the gas cylinder 500 to translate together, and the gas cylinder 500 retreats and resets. Due to the arrangement of the second spring 123, the top seat will also retreat and reset under the action of the second spring 123. Then, the lifting drive assembly 21 operates to drive the movable frame 214 and the inner bracket 12 to move upward. After moving in place, the gas cylinder 500 can be taken out.

[0059] The gas cylinder puncturing device for a coffee machine of the present invention can be used in conjunction with a coffee machine, and the coffee machine can adopt an existing coffee machine.

[0060] As Figures 9-10 shown, this embodiment provides a structural diagram of a coffee machine, which is convenient for exemplifying the gas cylinder puncturing device for a coffee machine of the present invention.

[0061] The coffee machine includes a water tank 100, a coffee powder bowl, an air circuit system 300, and a gas cylinder 500. The coffee powder bowl is used to hold coffee powder and is arranged at the bottom of the water tank 100. The gas cylinder puncturing device 400 cooperates with the gas cylinder 500 to puncture the gas cylinder 500 and connect the gas cylinder 500 and the air circuit system 300. The air outlet end of the air circuit system 300 is connected to the water tank 100. The gas cylinder puncturing device 400 for the coffee machine adopts the above-mentioned structure.

[0062] The air circuit system 300 at least includes a pressure reducing valve, a connecting pipeline, and an air inlet pipe 300a. The input end of the connecting pipeline is connected to the output pipe 33 of the puncturing mechanism 3, and the output end is connected to the air inlet end of the air inlet pipe 300a. The air inlet pipe 300a can be installed on the water tank 100 and its air outlet end extends into the interior of the water tank 100.

[0063] In addition, the coffee machine further includes a coffee powder seat 200. The coffee powder seat 200 is arranged at the bottom of the water tank 100 and is detachably connected to the water tank 100. The coffee powder bowl is sleeved in the coffee powder seat 200 and can be pressed by the coffee powder seat 200 against the bottom of the water tank 100. Thus, the hot water in the water tank 100 will flow out from the bottom of the water tank 100 into the coffee powder bowl, contact the coffee powder in the coffee powder bowl to obtain coffee liquid, and the coffee liquid flows out from the filter holes at the bottom of the coffee powder bowl.

[0064] The gas cylinder puncturing device for the coffee machine of the present invention has at least the following advantages over the prior art:

[0065] The present invention provides a gas cylinder puncturing device for a coffee machine with a completely new structure. This gas cylinder puncturing device for the coffee machine realizes the automation of the gas cylinder puncturing action, replaces the traditional manual operation of screwing the gas cylinder for puncturing, avoids the defects of manual operation, and has many advantages such as convenient operation, easy replacement of the gas cylinder, high puncturing efficiency, high safety, and less gas leakage.

[0066] The coffee machine applying the above gas cylinder puncturing device can automatically puncture the gas cylinder, is convenient to operate and easy to replace the gas cylinder.

[0067] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A gas cylinder puncturing device for a coffee machine, which is used in conjunction with a coffee machine, and is characterized in that, The gas cylinder puncturing device includes a mounting frame (4), a gas cylinder positioning mechanism (1), a driving mechanism (2), and a puncturing mechanism (3). The gas cylinder positioning mechanism (1) includes a mounting groove (10) that is in limit fit with the gas cylinder (500). The driving mechanism (2) is used to drive the gas cylinder (500) to move up and down and horizontally. The puncturing mechanism (3) cooperates with the gas cylinder (500) and is used to puncture the gas cylinder (500). After puncturing, the gas in the gas cylinder (500) is used to be transported into the water tank (100) of the coffee machine. The driving mechanism (2) includes a lifting driving assembly (21) and a horizontal driving assembly (22). The lifting driving assembly (21) is connected to the gas cylinder positioning mechanism (1) and is used to drive the gas cylinder (500) to move up and down in the height direction. The horizontal driving assembly (22) cooperates with the gas cylinder (500) and is used to drive the gas cylinder (500) to move horizontally. The lifting driving assembly (21) includes a first driving member (211), a first transmission module (212), and a movable frame (214). The movable frame (214) is movably mounted on the mounting frame (4). The first driving member (211) is mounted on the mounting frame (4) and is in transmission connection with the first transmission module (212). The first transmission module (212) is connected to the movable frame (214), and the movable frame (214) is connected to the gas cylinder positioning mechanism (1). The horizontal driving assembly (22) includes a second driving member (221), a second transmission module (222), and a top cylinder (223). The second driving member (221) is in transmission connection with the second transmission module (222). The second transmission module (222) is connected to the top cylinder (223), and the top cylinder (223) cooperates with the gas cylinder (500).

2. The gas cylinder puncturing device for a coffee machine according to claim 1, wherein The first transmission module (212) includes a first screw (212a) and a nut (212b). The first screw (212a) is in transmission connection with the driving end of the first driving member (211). The nut (212b) is sleeved on the outer periphery of the first screw (212a) and is connected to the movable frame (214).

3. The gas cylinder puncturing device for a coffee machine according to claim 2, characterized in that, The lifting driving assembly (21) further includes an elastic buffer module (215). The elastic buffer module (215) includes a connecting member (215a) and a first spring (215b). The nut (212b) and the movable frame (214) are connected through the connecting member (215a). The first spring (215b) is sleeved on the outer periphery of the connecting member (215a) and is located between the nut (212b) and the movable frame (214).

4. The gas cylinder puncturing device for a coffee machine according to claim 1, characterized in that, The lifting drive assembly (21) further includes a guiding module (213). The movable frame (214) is movably mounted on the mounting frame (4) through the guiding module (213). The guiding module (213) includes a guiding sleeve (213a) mounted on the mounting frame (4) and a guiding rod (213b) sleeved on the guiding sleeve (213a) and connected to the movable frame (214).

5. The gas cylinder puncturing device for a coffee machine according to claim 1, characterized in that, The horizontal drive assembly (22) further includes a first mounting seat (224). The first mounting seat (224) is connected to the gas cylinder positioning mechanism (1). The second transmission module (222) includes a first bevel gear (222a), a second bevel gear (222b), and a second screw rod (222c). The first bevel gear (222a) is connected to the driving end of the second driving member (221). The second bevel gear (222b) meshes with the first bevel gear (222a). The second screw rod (222c) is sleeved on the second bevel gear (222b). Both the first bevel gear (222a) and the second bevel gear (222b) are mounted on the first mounting seat (224). The top cylinder (223) is movably sleeved on the outer periphery of the second screw rod (222c) and is in sliding fit with the first mounting seat (224).

6. The gas cylinder puncturing device for a coffee machine according to claim 5, characterized in that, The top cylinder (223) is provided with a second profiling groove (223a) that is in limit fit with the tail of the gas cylinder (500). A magnetic attraction member (225) that cooperates with the gas cylinder (500) is provided at the bottom of the second profiling groove (223a).

7. The gas cylinder puncturing device for a coffee machine according to any one of claims 1-6, characterized in that, The gas cylinder positioning mechanism (1) includes an outer bracket (11) and an inner bracket (12). The outer bracket (11) is provided with a cavity and is respectively connected to the puncturing mechanism (3) and the horizontal drive assembly (22). The inner bracket (12) is sleeved inside the outer bracket (11) and its bottom is connected to the movable frame (214). A first profiling groove (121a) that is in limit fit with the gas cylinder (500) is provided at the top of the inner bracket (12). The first profiling groove (121a) and the outer bracket (11) together enclose the mounting groove (10).

8. The gas cylinder puncturing device for a coffee machine according to claim 7, characterized in that, The inner bracket (12) includes a top block (121), a base (122), a second spring (123), and a guiding pin (124). The top block (121) is movably mounted above the base (122) and is guided by the guiding pin (124). A first limiting groove (121b) is provided at the bottom of the top block (121). The second spring (123) is mounted in the first limiting groove (121b) and abuts against the top block (121) and the base (122) respectively.

9. The gas cylinder puncturing device for a coffee machine according to any one of claims 1-6, characterized in that, The puncturing mechanism (3) includes a second mounting base (31), a puncturing needle (32) and an output pipe (33). The second mounting base (31) is provided with a through hole (311) that cooperates with the mouth of the gas cylinder (500). The puncturing needle (32) is installed in the second mounting base (31) and its head extends into the through hole (311). The first end of the output pipe (33) extends into the second mounting base (31), and the second end is connected to the gas circuit system (300) of the coffee machine and introduces the gas in the gas cylinder (500) into the water tank (100) of the coffee machine. A gas passage (321) is provided in the center of the puncturing needle (32), and the gas passage (321) communicates with the output pipe (33).

10. The gas cylinder puncturing device for a coffee machine according to any one of claims 1-6, characterized in that, It further includes a first sensing mechanism (5) and a second sensing mechanism (6). The first sensing mechanism (5) includes a first sensor (51) installed on the mounting frame (4) and a first sensing element (52) installed on the movable frame (214) and cooperating with the first sensor (51). The second sensing mechanism (6) includes a second sensor (61) installed on the mounting frame (4) and a second sensing element (62) installed on the top cylinder (223) and cooperating with the second sensor (61).

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