Welding mechanism for coffee valve

Abstract

The application discloses a welding mechanism of a coffee valve, which comprises a horizontal base, a vibrating disc and a feeding and welding device arranged at the top of the base respectively, the feeding and welding device comprises a feeding frame, a positioning device and a welding device arranged on the feeding frame, a feeding track is arranged in the feeding frame and connected to the vibrating disc and the positioning device, the positioning device comprises a lifting top block connected to the feeding frame through a lower welding cylinder and a suction disc arranged in the lifting top block, the welding device comprises a welding head arranged above the lifting top block and connected to the feeding frame through an upper welding cylinder. The welding mechanism of the coffee valve has simple structure, the lifting top block and the welding head of the coffee valve are relatively moved through the lower welding cylinder and the upper welding cylinder respectively, the moving stroke of the coffee valve is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of automated production technology, and in particular to a welding mechanism for a coffee valve. Background Technology

[0002] Coffee packaging bags are used to seal and store coffee. However, during actual storage, coffee produces gas over time, causing the bag to expand and affecting the quality of the coffee. If the packaging is not sealed, moisture in the air will accelerate spoilage. Therefore, a one-way coffee valve / vent valve is usually installed on the outside of the packaging bag to expel air. The coffee valve is typically heat-sealed to the corresponding position on the bag using processes such as welding. Existing welding equipment often achieves welding by unidirectional movement of the welding head, resulting in a large travel distance and low welding efficiency. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a welding mechanism for a coffee valve to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a welding mechanism for a coffee valve, including a horizontally arranged base and a vibratory feeder and a feeding welding device respectively disposed at the top of the base. The feeding welding device includes a feeding frame and a positioning device and a welding device disposed on the feeding frame. The feeding frame is provided with a feeding track that connects to the vibratory feeder and the positioning device. The positioning device includes a lifting top block connected to the feeding frame via a lower welding cylinder and a suction cup disposed within the lifting top block. The welding device includes a welding head disposed directly above the lifting top block, and the welding head is connected to the feeding frame via an upper welding cylinder.

[0005] Furthermore, in the above-mentioned welding mechanism for the coffee valve, the base includes a support frame and a platform slidably disposed on the top of the support frame. The vibratory plate is slidably disposed on the top of the platform via a base plate, and the moving direction of the platform is perpendicular to the moving direction of the base plate.

[0006] Furthermore, in the above-mentioned welding mechanism for the coffee valve, the feeding rack includes two gun-shaped wall plates fixed to the top of the base plate, and the feeding track, positioning device and welding device are respectively arranged between the two gun-shaped wall plates.

[0007] Furthermore, in the above-mentioned welding mechanism for the coffee valve, the two sides of the upper welding cylinder are slidably connected to the corresponding gun-shaped wall plate through cylinder seats. The side of the gun-shaped wall plate near the positioning device and the welding device is provided with an opening groove for accommodating the membrane material to pass through. The positioning device is located below the opening groove, and the welding device is located above the opening groove.

[0008] Furthermore, in the welding mechanism of the coffee valve described above, a trunnion protrudes from the side of the cylinder seat near the side corresponding to the gun-shaped wall plate. The gun-shaped wall plate is provided with a working groove and an idle groove corresponding to the trunnion. The idle groove is located directly above the working groove, and a connecting groove connected to the working groove is provided on one side.

[0009] Furthermore, in the welding mechanism of the coffee valve described above, the feeding track includes a reversing track, a connecting track, and a preheating track arranged in sequence. The reversing track includes a first track and a second track that are perpendicular to each other and connected. The first track is connected to the discharge port of the vibratory plate, and the second track is connected to the connecting track. A feeding cylinder is provided at one end of the second track that is away from the connecting track.

[0010] Furthermore, in the welding mechanism of the coffee valve described above, the piston rod of the feeding cylinder is connected to a feeding block via a guide rail. The feeding block is slidably disposed within the second track, and the guide rail is fixed to the feeding frame via a mounting base.

[0011] Furthermore, in the welding mechanism of the coffee valve described above, the preheating track includes a track plate disposed between the second track and the positioning device and a first heating plate disposed at the bottom of the track plate.

[0012] Furthermore, in the above-mentioned welding mechanism for the coffee valve, the suction cup is mounted on the feeding rack via a suction block. The suction block includes a fixed base, and a fixed block for mounting the suction cup protrudes from one side of the fixed base. The lifting top block is provided with an clearance groove corresponding to the fixed block.

[0013] Furthermore, in the above-mentioned welding mechanism for the coffee valve, the push plate of the upper welding cylinder is connected to the welding head via a first heat insulation plate, a connecting plate, a second heat insulation plate, a transition plate, and a second heating plate arranged in sequence.

[0014] Compared with the prior art, the welding mechanism of the coffee valve described in this utility model has a simple structure. The lifting top block of the coffee valve and the welding head move relative to each other through the lower welding cylinder and the upper welding cylinder, respectively, reducing the movement stroke of the coffee valve and improving work efficiency. The preheating track is set to preheat the coffee valve in advance, reducing the welding time required and further improving work efficiency. The gun-shaped wall plate is provided with a working slot and an idle slot. The welding device can move back and forth between the working slot and the idle slot through the trunnion, which can be used for welding coffee valves and can also be used without interfering with the production of packaging bags that do not require welding coffee valves. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a structural schematic of the welding mechanism of the coffee valve in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is a schematic diagram of the installation of the vibratory feeder in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a structural schematic of the feeding and welding device in a specific embodiment of this utility model.

[0018] Figure 4 The diagram shown is an internal schematic of the feeding and welding device in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a structural schematic of the reversing track in a specific embodiment of this utility model.

[0020] Figure 6 The diagram shown is a structural schematic of the preheating track in a specific embodiment of this utility model.

[0021] Figure 7 The diagram shown is a structural schematic of the positioning device in a specific embodiment of this utility model.

[0022] Figure 8 The diagram shown is an exploded view of the suction cup and suction block in a specific embodiment of this utility model.

[0023] Figure 9 The diagram shown is an installation schematic of the welding device in a specific embodiment of this utility model.

[0024] Figure 10The diagram shown is a schematic representation of the connection between the hanging ear and the gun-shaped wall panel in a specific embodiment of this utility model.

[0025] Figure 11 The diagram shown is an exploded view of the upper welding cylinder, the first heat insulation plate, the connecting plate, the second heat insulation plate, the transition plate, the second heating plate, and the welding head in a specific embodiment of this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Combination Figures 1 to 11 As shown, a welding mechanism for a coffee valve is installed at a corresponding position on equipment such as a bag-making machine. It is used to weld the coffee valve to the corresponding position on the packaging bag. The mechanism includes a horizontally arranged base 1, a vibrating plate 2 and a feeding welding device 3 respectively installed at the top of the base 1. The feeding welding device 3 includes a feeding frame 31, a positioning device 32 and a welding device 33 installed on the feeding frame 31. The feeding frame 31 is provided with a feeding track 34 that connects to the vibrating plate 2 and the positioning device 32. The positioning device 32 includes a lifting top block 322 that is slidably connected to the feeding frame 31 through a lower welding cylinder 321 and a suction cup 323 installed in the lifting top block 322. The welding device 33 includes a welding head 331 installed directly above the lifting top block 322. The welding head 331 is connected to the feeding frame 31 through an upper welding cylinder 332.

[0028] In this technical solution, the vibratory feeder uses an existing structure. Coffee valves inside the vibratory feeder are sequentially fed into the feeding track. The coffee valves move along the feeding track to the positioning device, where they are attracted to the top of the lifting block by a suction cup. The packaging bag / film is conveyed by the bag making machine to the space between the positioning device and the welding device. The upper and lower welding cylinders are activated simultaneously, moving the welding head and coffee valve closer to the packaging bag / film. The welding head and coffee valve abut against the surface of the packaging bag / film, and the coffee valve is welded to the packaging bag / film by the welding head. The welding mechanism of this coffee valve has a simple structure. The lifting block of the coffee valve and the welding head move relative to each other through the lower and upper welding cylinders, reducing the travel of the coffee valve and improving work efficiency. In addition, the simultaneous movement of the welding head and coffee valve closer to the surface of the packaging bag / film eliminates the need to squeeze the packaging bag / film, avoiding deformation caused by traction.

[0029] For example, see Figure 1 and Figure 2As shown, the base 1 includes a support frame 11 and a platform 12 slidably disposed on the top of the support frame 11. The vibrating plate 2 is slidably disposed on the top of the platform 12 via the base plate 21. The moving direction of the platform 12 is perpendicular to the moving direction of the base plate 21.

[0030] In this technical solution, the support frame is assembled using conventional adjustable feet, profiles, and plates. The adjustable feet adjust the level and installation height of the base plate, thereby matching the positioning device and welding device to the welding position of the packaging bag / film. The table is slidably mounted on top of the support frame via conventional linear guides, and its position is adjusted via conventional gear shafts and racks. The gear shafts are controlled manually or automatically by a motor. The base plate is slidably mounted on top of the table via conventional linear guides, and its position is adjusted via conventional lead screws. The movement direction of the table is perpendicular to the movement direction of the base plate, thus meeting the position adjustment requirements of the feeding and welding device, and ensuring that the positioning device and welding device match the welding position of the packaging bag / film.

[0031] For example, see Figures 1 to 4 As shown, the loading rack 31 includes two gun-shaped wall panels 311 fixed to the top of the base plate 21, and the loading track 34, positioning device 32 and welding device 33 are respectively arranged between the two gun-shaped wall panels 311.

[0032] In this technical solution, the gun-shaped wall panel is made from conventional sheet metal through cutting and other processes. It includes a vertical plate installed on the top of the base plate by means of angle iron and a horizontal plate perpendicular to the vertical plate. The two gun-shaped wall panels are connected by several connecting blocks to form a space that can accommodate the feeding track, positioning device and welding device. The gun-shaped wall panel and connecting blocks are also machined with conventional process holes such as weight reduction holes. The base, vibrating plate and vertical plate are all set outside the bag making machine, and the horizontal plate is suspended above the bag making machine. There is no need to change the structure of the existing bag making machine, thus reducing production costs.

[0033] For example, see Figures 1 to 4 As shown, the two sides of the upper welding cylinder 332 are slidably connected to the corresponding gun-shaped wall plate 311 through the cylinder seat 333. The side of the gun-shaped wall plate 311 near the positioning device 32 and the welding device 33 is provided with an opening groove 3111 for accommodating the packaging bag / film material to pass through. The positioning device 32 is located below the opening groove 3111, and the welding device 33 is located above the opening groove 3111.

[0034] In this technical solution, an opening groove is machined at the end of the horizontal plate away from the vertical plate. When the horizontal plate is suspended above the bag making machine, the packaging bag / film material passes through the opening groove. During the normal operation of the bag making machine, the welding mechanism of the coffee valve can be inserted or pulled out horizontally (in the length direction of the horizontal plate) above the bag making machine without affecting the normal operation of the bag making machine. The welding mechanism can be arranged or removed in advance to improve the efficiency of changing production models. The welding device and the positioning device are respectively set above and below the opening groove, that is, the welding device and the positioning device are respectively set above and below the packaging bag / film material.

[0035] For example, see Figure 3 , Figure 4 as well as Figure 9 and Figure 10 As shown, a trunnion 334 protrudes from the side of the cylinder seat 333 near the corresponding gun-shaped wall plate 311. The gun-shaped wall plate 311 is provided with a working groove 3112 and an idle groove 3113 corresponding to the trunnion 334. The idle groove 3113 is located directly above the working groove 3112, and a connecting groove 3114 connecting to the working groove is provided on one side.

[0036] In this technical solution, the cylinder seat is fixed to the corresponding side of the upper welding cylinder using conventional bolts, and the trunnion is fixed to the outer side of the cylinder seat (the side away from the upper welding cylinder) using conventional bolts. When the trunnion is in the working groove, the upper welding cylinder can drive the welding head to complete the welding of the coffee valve. After the trunnion slides along the connecting groove to the idle groove, the welding head moves away from the surface of the packaging bag / film material, and the bag making machine operates normally. This is used for the production of packaging bags that do not require welding of the coffee valve, or for stopping the machine for inspection / changing the film roll. The welding head does not need to stop heating, avoiding the need for reheating after restarting. The welding head is away from the surface of the packaging bag / film material, avoiding thermal deformation caused by prolonged proximity to the same position of the packaging bag / film material. A locking block is provided on the side of the gun-shaped wall panel near the connecting groove. A conventional locking bolt (not shown) is provided in the locking block. The locking bolt can abut against the side of the trunnion, thereby fixing the trunnion in the working groove, that is, fixing the welding device. A limit part protrudes from the side of the idle groove near the connecting groove to prevent the trunnion from sliding into the idle groove without external force.

[0037] For example, see Figures 3 to 6 As shown, the feeding track 34 includes a reversing track 341, a connecting track 342, and a preheating track 343 arranged in sequence. The reversing track 341 includes a first track and a second track that are perpendicular to each other and connected. The first track is connected to the discharge port of the vibrating plate 2, and the second track is connected to the connecting track 342. A feeding cylinder 344 is provided at the end of the second track that is away from the connecting track 342.

[0038] In this technical solution, the gun-shaped wall panel is provided with an operating port corresponding to the reversing track, which facilitates the installation of the feeding cylinder and the reversing track. The end of the reversing track near the vibratory plate extends to the outside of the corresponding gun-shaped wall panel and is connected to the discharge port / discharge track of the vibratory plate. The coffee valve flowing out of the vibratory plate enters the connecting track through the reversing track and moves sequentially to the preheating track and the positioning device under the action of the feeding cylinder.

[0039] For example, see Figures 3 to 6 As shown, the piston rod of the feeding cylinder 344 is connected to the feeding block 346 via the guide rail 345. The feeding block 346 is slidably disposed in the second track, and the guide rail 345 is fixed to the feeding frame 31 via the mounting seat.

[0040] In this technical solution, the reversing track includes a first track base plate and a first track cover plate. The first track base plate has a T-shaped groove machined inside, forming a corresponding first track and second track with the first track cover plate. The first track cover plate has an elongated groove along the length of the first track. When the coffee valve in the first track is stuck, it can be moved by an external lever / bar / wrench, etc. The end of the feeding block facing away from the feeding cylinder is slidably positioned in the second track. The feeding cylinder drives the feeding block to slide back and forth, thereby pushing the coffee valve in the second track into the track. Through the pushing action between adjacent coffee valves, the coffee valves are sequentially moved. The feeding block slides towards the preheating track and positioning device. An arc-shaped groove is machined at the end of the feeding block near the coffee valve to improve the feeding accuracy of the coffee valve. The connecting track includes a second track base plate and two second track cover plates fixed to the top sides of the second track cover plate (one side of the second track cover plate is omitted), forming a channel to accommodate the passage of the coffee valve. The two second track cover plates are spaced apart, and the coffee valve can be moved through the gap between the two second track cover plates. The mounting seat of the guide rail is fixed between the two gun-shaped wall plates by conventional bolts, etc. The mounting seat is a conventional block and plate structure spliced ​​together, which can meet the installation requirements of the feeding cylinder, guide rail, reversing track and connecting track.

[0041] For example, see Figure 3 , Figure 4 and Figure 6 As shown, the preheating track 343 includes a track plate 3431 disposed between the second track and the positioning device 32 and a first heating plate 3432 disposed at the bottom of the track plate 3431.

[0042] In this technical solution, the track plate includes a third track base plate and two third track cover plates fixed to the top sides of the third track cover plate (one third track cover plate is omitted), forming a channel for the coffee valve to pass through. The two third track cover plates are spaced apart, and the coffee valve can be moved through the gap between the two third track cover plates. The end of the third track plate near the connecting track has a receiving boss that supports the second track plate. The first heating plate can be a conventional electric heating plate, which is fixed to the corresponding connecting block by bolts, etc., to preheat the coffee valve in the preheating track, so that the coffee valve can quickly reach the welding temperature.

[0043] For example, see Figures 6 to 8 As shown, the suction cup 323 is mounted on the feeding frame 31 via the suction block 324. The suction block includes a fixed base, and a fixed block for mounting the suction cup 323 protrudes from one side of the fixed base. The lifting top block 322 is provided with a clearance groove corresponding to the fixed block.

[0044] In this technical solution, the suction block is equipped with an air passage connected to the suction cup. The air passage is connected to an external vacuum generator through conventional air pipes. The process holes on the suction block used for processing the air passage are sealed with conventional plugs. The lifting top block is a hollow tubular structure. The coffee valve is locked at the top of the lifting top block under the action of the suction cup, thus completing the positioning of the coffee valve. The bottom of the lifting top block is connected to the piston rod of the lower welding cylinder through threaded connection or other means. The lower welding cylinder drives the lifting top block and the coffee valve to move upward (towards the welding head). The clearance groove in the lifting top block can avoid interference between the lifting top block and the fixed block.

[0045] For example, see Figures 9 to 11 As shown, the push plate of the upper welding cylinder 332 is connected to the welding head 331 through a first heat insulation plate 335, a connecting plate 336, a second heat insulation plate 337, a transition plate 338, and a second heating plate 339 arranged in sequence.

[0046] In this technical solution, the second heating plate is fixed to the push plate of the upper welding cylinder by the first heat insulation plate, the connecting plate, the second heat insulation plate, and the transition plate. At the same time, the heat transfer from the second heating plate to the upper welding cylinder is reduced. The second heating plate is a conventional electric heating plate to provide heat to the welding head. An L-shaped limiting plate is set on one side of the gun-shaped wall plate to prevent the packaging bag / film material from being pulled and deformed due to the welding head moving beyond the set range. The limiting plate is provided with a U-shaped groove corresponding to the welding head to avoid interference with the normal welding of the welding head.

[0047] In summary, the welding mechanism of the coffee valve described in this utility model has a simple structure. The lifting top block of the coffee valve and the welding head move relative to each other through the lower welding cylinder and the upper welding cylinder, respectively, reducing the movement stroke of the coffee valve and improving work efficiency. The preheating track is set to preheat the coffee valve in advance, reducing the welding time required and further improving work efficiency. The gun-shaped wall panel is provided with a working slot and an idle slot. The welding device can move back and forth between the working slot and the idle slot through the trunnion, which can be used for welding coffee valves without interfering with the production of packaging bags that do not require welding coffee valves.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A welding mechanism for a coffee valve, characterized in that, The device includes a horizontally positioned base and a vibratory feeder and a feeding and welding device respectively positioned at the top of the base. The feeding and welding device includes a feeding frame, a positioning device and a welding device positioned on the feeding frame. The feeding frame has a feeding track that connects to the vibratory feeder and the positioning device. The positioning device includes a lifting block connected to the feeding frame via a lower welding cylinder and a suction cup positioned inside the lifting block. The welding device includes a welding head positioned directly above the lifting block, and the welding head is connected to the feeding frame via an upper welding cylinder.

2. The welding mechanism for the coffee valve according to claim 1, characterized in that: The base includes a support frame and a platform slidably disposed on the top of the support frame. The vibratory feeder is slidably disposed on the top of the platform via a base plate, and the moving direction of the platform is perpendicular to the moving direction of the base plate.

3. The welding mechanism for the coffee valve according to claim 2, characterized in that: The feeding rack includes two gun-shaped wall panels fixed to the top of the base plate, and the feeding track, positioning device and welding device are respectively arranged between the two gun-shaped wall panels.

4. The welding mechanism for the coffee valve according to claim 3, characterized in that: The upper welding cylinder is slidably connected to the corresponding gun-shaped wall plate on both sides via cylinder seats. The gun-shaped wall plate is provided with an opening groove for accommodating the membrane material to pass through on the side near the positioning device and the welding device. The positioning device is located below the opening groove, and the welding device is located above the opening groove.

5. The welding mechanism for the coffee valve according to claim 4, characterized in that: A trunnion protrudes from the side of the cylinder seat near the corresponding gun-shaped wall plate. The gun-shaped wall plate is provided with a working groove and an idle groove corresponding to the trunnion. The idle groove is located directly above the working groove, and a connecting groove connecting to the working groove is provided on one side.

6. The welding mechanism for the coffee valve according to claim 1, characterized in that: The feeding track includes a reversing track, a connecting track, and a preheating track arranged in sequence. The reversing track includes a first track and a second track that are perpendicular to each other and connected. The first track is connected to the discharge port of the vibrating plate, and the second track is connected to the connecting track. A feeding cylinder is provided at the end of the second track that is away from the connecting track.

7. The welding mechanism for the coffee valve according to claim 6, characterized in that: The piston rod of the feeding cylinder is connected to a feeding block via a guide rail. The feeding block is slidably disposed within the second track, and the guide rail is fixed to the feeding frame via a mounting base.

8. The welding mechanism for the coffee valve according to claim 6, characterized in that: The preheating track includes a track plate disposed between the second track and the positioning device and a first heating plate disposed at the bottom of the track plate.

9. The welding mechanism for the coffee valve according to claim 1, characterized in that: The suction cup is mounted on the feeding rack via a suction block. The suction block includes a fixed base, and a fixed block for mounting the suction cup protrudes from one side of the fixed base. The lifting top block is provided with a clearance groove corresponding to the fixed block.

10. The welding mechanism for the coffee valve according to claim 1, characterized in that: The push plate of the upper welding cylinder is connected to the welding head through a first heat insulation plate, a connecting plate, a second heat insulation plate, a transition plate, and a second heating plate arranged in sequence.

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