Automatic inflation device for bottle and can forming equipment

Abstract

The utility model discloses an automatic inflating device for bottle and can forming equipment. The automatic inflating device is characterized by comprising a cam guide rod mechanism and an air inlet jacking mechanism, according to the scheme, the characteristic that a carrier chain does one-way intermittent movement along a guide rail is utilized, and a cam guide rod mechanism and an air inlet jacking mechanism are designed according to one-way valves for inflation arranged on all carriers, the cam guide rod mechanism is driven by the rotation driving mechanism to enable the guide rod to do reciprocating rectilinear motion through the lift section, the far stop section, the return section and the near stop section of the cam, and then the air inlet jacking mechanism with the inflation inlet is arranged at the lower end of the guide rod. In the working process, when the carriers move to a tank feeding station and stay, the cam guide rod mechanism drives the air inlet jacking and pressing mechanism to press downwards to open the one-way valve to inflate the air chambers in the carriers, the cam guide rod mechanism drives the air inlet jacking and pressing mechanism to ascend after inflation is completed, and therefore the carriers are inflated one by one. According to the scheme, the problems of stability, reliability and rapidness of continuously and automatically inflating the interiors of the carriers are solved.

Description

Technical Field

[0001] The utility model relates to metal bottle and can forming equipment, in particular to an automatic inflation device for bottle and can forming equipment. The inflation device can be applied to bottle and can forming equipment to assist in fixing the metal tank body to be formed on a carrier (a tooling fixture for fixing the tank body to be processed). Background Art

[0002] With the improvement of people's living standards, high-end beverages in metal bottles and cans (pull-top cans) as containers have various specifications in the market, especially with a large market demand abroad. The outer shape of the metal tank body 15 is characterized in that its mouth part is conical, with an anti-theft groove 19 and a thread 20 for connecting the bottle cap, as shown in the right figure of Figure 1 For its manufacturing, first, an aluminum alloy plate is formed into a cylindrical shell through stretching and thinning processes (as shown in the left figure of Figure 1 ), and then its mouth part (i.e., the can mouth) is necked down multiple times to form a conical shoulder. At the same time, the necked-down mouth part is subjected to forming processes such as threading, anti-theft groove, trimming, and curling (as shown in the right figure of Figure 1 ).

[0003] The metal bottle and can forming equipment uses one or more groups of molds to perform progressive forming processing on a series of tank bodies to be processed arranged in a flowing water manner. Multiple carriers (tooling fixtures for fixing the tank bodies to be processed) for clamping the tank bodies are designed in the metal bottle and can forming equipment. These carriers are connected in series and end to end to form a carrier chain. During the forming process, the tank bodies to be processed are sequentially fed into each carrier that stays briefly at this station through the can feeding mechanism from the can feeding station and fixed on the carrier. Then, the tank bodies to be processed move intermittently along the guide rail with the carrier chain. The guide rail can be designed as an oval track (not limited to this), and the track is composed of two straight segments connected by two semi-circular arcs. Each tank body will pass through the positions corresponding to each station of the molds along the straight segment with the carrier chain in sequence and be processed and formed by the molds reciprocating in the direction perpendicular to the straight segment. An out-can station is also provided on the oval track, and the formed tank bodies are sequentially sent out through the out-can mechanism from the out-can station, thus realizing continuous flowing water forming processing.

[0004] During the processing and forming of a metal tank body, after each tank body is fed into a carrier, it is fixed by an adsorption device or a clamping mechanism provided on the carrier. In the prior art, the adsorption mechanism usually generates negative pressure on the bottom or / and side of the tank body to fix it on the carrier. This positioning and fixing method is not stable enough. When the demolding force is large after the tank body is formed, it is easy to pull out the tank body from the carrier, resulting in errors. The clamping mechanism requires compressed air to be filled into the carrier, so that the rubber tank clamping ring in the carrier expands and deforms to fix the metal tank body, ensuring that the metal tank body is in a static state during the forming process. However, for clamping and fixing the metal tank body by compressed air, how to achieve stable, reliable, fast and continuous automatic inflation of the clamping mechanisms in each carrier is the research topic of the present utility model. Summary of the Invention

[0005] The present utility model provides an automatic inflation device for a bottle and can forming device, and its purpose is to solve the problems of stability, reliability and rapidity of continuously and automatically inflating the clamping mechanisms in each carrier.

[0006] To achieve the above object, the technical solution adopted by the present invention is: an automatic inflation device for a bottle and can forming device, and its innovation lies in: including a cam guide rod mechanism and an air inlet pressing mechanism. Define the air inlet pressing direction as the up and down direction, and the direction perpendicular to the up and down direction as the horizontal direction. Define that the bottle and can forming device has a base.

[0007] The cam guide rod mechanism includes a cam, a guide rod, a guide shaft sleeve, a fixed seat and a first spring, wherein:

[0008] The cam is a mechanical rotating member, the cam is rotatably supported relative to the base, the rotation axis of the cam is arranged along the horizontal direction, the cam is a disk-shaped cam, and its cam profile is sequentially connected by a lift section, a far rest section, a return section and a near rest section.

[0009] The guide rod is arranged in the up and down direction as a sliding rod, the guide shaft sleeve is sleeved outside the guide rod as a guiding member, the guide shaft sleeve is fixedly positioned relative to the base, and the guide rod is slidably matched with the guide shaft sleeve in the up and down direction.

[0010] The fixed seat is a fixed supporting member, the fixed seat is fixedly arranged relative to the base, the fixed seat is provided with an upward first supporting surface, a downward second supporting surface is provided on the guide rod corresponding to the first supporting surface, the first supporting surface is located below the second supporting surface, the first spring is arranged in the up and down direction, the lower end of the first spring presses against the first supporting surface of the fixed seat, the upper end of the first spring presses against the second supporting surface of the guide rod, and the first spring acts in the up and down direction and forces the upper end of the guide rod to always keep in contact and cooperation with the cam profile.

[0011] The intake pressure top pressing mechanism includes an intake pressure rod, where:

[0012] The intake pressure rod is of a rod structure and is arranged in the vertical direction. The upper end of the intake pressure rod is fixedly connected to the lower end of the guide rod or the two are integrally formed. A gas guide channel is provided along the length direction of the rod in the intake pressure rod. The gas guide channel is provided with an air inlet and an air outlet on the outside. The air inlet leads to an external compressed air source, and the air outlet is located at the lower end of the intake pressure rod and serves as an inflation port.

[0013] The relevant content in the above technical solution is explained as follows:

[0014] 1. In the above solution, the intake pressure top pressing mechanism includes a sealing sleeve and a second spring, where: The sealing sleeve is of a sleeve structure. The sealing sleeve is sleeved at the lower end of the intake pressure rod and is slidably matched with the intake pressure rod. Limiting steps that cooperate with each other are respectively provided between the inner edge of the sealing sleeve and the outer edge of the intake pressure rod. In the assembled state, the limiting steps can limit the position where the sealing sleeve slides downward relative to the intake pressure rod. In the limiting state, the lower end of the intake pressure rod remains in the sleeve cavity of the sealing sleeve. A third supporting surface facing upward is provided on the sealing sleeve. Corresponding to this third supporting surface, a fourth supporting surface facing downward is provided on the fixed seat. The second spring is arranged in the vertical direction. The lower end of the second spring presses against the third supporting surface of the sealing sleeve, and the upper end of the second spring presses against the fourth supporting surface of the fixed seat. The second spring acts in the vertical direction and forces the sealing sleeve to be in a downward sliding limiting position relative to the lower end of the intake pressure rod.

[0015] 2. In the above solution, the lower end surface of the sealing sleeve is an annular sealing surface, and the lower end surface of the intake pressure rod serves as a top pressing acting surface. The top pressing acting surface is located within the area of the annular sealing surface. A gap is left between the inner edge of the sealing sleeve and the outer edge at the lower end of the intake pressure rod. The air outlet of the gas guide channel is provided at a position on the side of the lower end of the intake pressure rod corresponding to the gap, thereby forming an inflation port.

[0016] 3. In the above solution, a first sealing ring is provided between the inner edge of the sealing sleeve and the outer edge of the intake pressure rod. The first sealing ring is located at the sliding fit section position above the gap.

[0017] 4. In the above solution, a driven roller is provided at the upper end of the guide rod. The driven roller is rotationally positioned at the upper end of the guide rod through a pin shaft. The guide rod is always in contact and cooperation with the cam rim through the driven roller.

[0018] 5. In the above solution, the specific fixed connection between the upper end of the intake pressure rod and the lower end of the guide rod is as follows: The lower end of the guide rod is provided with an inner hole opening downward. The aperture of the inner hole matches the outer diameter of the intake pressure rod. A positioning groove for determining the position of the intake pressure rod in the up and down directions is provided on the outer edge of the intake pressure rod. A positioning block is provided corresponding to the positioning groove. The positioning block is provided with a positioning portion that cooperates with the positioning groove. In the assembled state, the upper end of the intake pressure rod extends into the inner hole at the lower end of the guide rod and cooperates with the inner hole. The positioning portion on the positioning block is engaged with the positioning groove of the intake pressure rod. The positioning block is fixedly connected to the guide rod, thereby positioning and fixedly connecting the intake pressure rod relative to the guide rod in the up and down directions.

[0019] 6. In the above solution, the air guide channel extends upward in the intake pressure rod to the inside of the guide rod. The air inlet is arranged on the guide rod and leads to an external compressed air source through a pipe joint. A second sealing ring is provided on the mating section where the upper end of the intake pressure rod extends into the inner hole at the lower end of the guide rod.

[0020] 7. In the above solution, the positioning block is fixed to the lower end of the guide rod by screws.

[0021] 8. In the above solution, a rotational drive mechanism is included. The rotational drive mechanism is in transmission connection with the cam in the cam guide rod mechanism. The rotational drive mechanism is a synchronous pulley drive mechanism or a gear drive mechanism or other mechanisms such as a motor that can drive the cam to make a uniform rotational motion.

[0022] The design principle and concept of the present utility model are as follows: In order to solve the problems of stability, reliability, and rapidity in continuously and automatically inflating the clamping mechanisms in each vehicle, the present utility model utilizes the characteristic that the vehicle chain makes a one-way intermittent movement (stop-and-go movement) along the guide rail. A cam guide rod mechanism and an intake pressing mechanism are designed for the one-way valves for inflation provided on each vehicle. Among them, the cam guide rod mechanism drives the guide rod to make a reciprocating linear motion by using the lift section, far rest section, return section, and near rest section of the cam under the drive of the rotational drive mechanism. Then, the intake pressing mechanism with an inflation port is arranged at the lower end of the guide rod. During operation, when the vehicle moves to the inlet tank station and stops, the cam guide rod mechanism drives the intake pressing mechanism to press down to open the one-way valve to inflate the air chamber in the vehicle. After inflation is completed, the cam guide rod mechanism drives the intake pressing mechanism to rise, thereby inflating each vehicle one by one.

[0023] Due to the application of the above technical solutions, the present utility model has the following advantages and effects:

[0024] 1. The structure of the present utility model is simple, and the operation is stable and reliable, and it can meet and adapt to the high-speed operation requirements of rapid inflation.

[0025] 2. The utility model combines the cam guide rod mechanism with the air intake and pressure mechanism in a reasonable and ingenious way, solving the problem that each carrier needs to be quickly inflated to fix the processed metal can body in the bottle and can forming equipment.

[0026] 3. The utility model adopts the design of adding a sealing sleeve to the lower end of the air intake pressure rod to better solve the problem of opening the one-way valve and sealing and inflating.

[0027] 4. The utility model adopts a double spring design of a first spring and a second spring, which can not only effectively control the accuracy of the downward pressure, but also effectively and cooperatively solve the sealing problem before opening the one-way valve.

[0028] 5. The design of the positioning block and the positioning groove of the utility model can effectively control the relative position of the gas pressure rod and the guide rod, thereby accurately controlling the position of the lower end of the gas intake pressure rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 This is a schematic diagram of the molding of the metal bottle can of the utility model;

[0030] Attached Figure 2 This is the front view of the automatic inflation device of the utility model;

[0031] Attached Figure 3 This is a side view of the automatic inflation device of the utility model;

[0032] Attached Figure 4 This is the inflation principle diagram of the automatic inflation device of the utility model;

[0033] Attached Figure 5 It is a schematic diagram of the can feeding mechanism and the carrier shifting mechanism in the bottle can forming equipment;

[0034] Attached Figure 6 This is a cross-sectional view of the can feeding station in the bottle forming equipment.

[0035] In the above drawings: 1. synchronous belt pulley transmission mechanism; 2. cam; 3. guide rod; 4. air intake pressure rod; 5. positioning block; 6. driven roller; 7. pin shaft; 8. guide shaft sleeve; 9. first spring; 10. sealing sleeve; 11. second spring; 12. fixing seat; 13. carrier; 14. tank feeding mechanism; 15. metal tank body; 16. one-way valve; 17. one-way valve core; 18. inflation device; 19. anti-theft groove; 20. thread; 21. first supporting surface; 22. second supporting surface; 23. third supporting surface; 24. fourth supporting surface; 25. air guide channel; 26. gap; 27. first sealing ring; 28. inner hole; 29. ​​positioning groove; 30. pipe joint; 31. second sealing ring; 32. limiting step. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0037] Embodiment: An automatic inflation device for bottle and can forming equipment

[0038] In order to clearly describe the embodiments of the present invention, the intake pressing direction is defined as the up - down direction, the direction perpendicular to the up - down direction is the horizontal direction, and it is defined that the bottle and can forming equipment has a base.

[0039] As Figures 2 - 4 shown, this automatic inflation device is composed of a cam - guide rod mechanism, an intake pressing mechanism, and a rotation driving mechanism.

[0040] The cam - guide rod mechanism includes a cam 2, a guide rod 3, a guide shaft sleeve 8, a fixed seat 12, and a first spring 9 (see Figure 2 ), where:[[]]

[0041] The cam 2 is a mechanical rotating member, and the cam 2 is rotatably supported relative to the base (see Figure 2 and Figure 3 ), the rotation axis of the cam 2 is arranged in the horizontal direction, the cam 2 is a disk - shaped cam, and its cam profile is sequentially connected by a lift section, a far rest section, a return section, and a near rest section (see Figure 2 ).

[0042] The guide rod 3 is arranged in the up - down direction as a sliding rod, and the guide shaft sleeve 8 is sleeved outside the guide rod 3 as a guiding member (see Figure 2 ), the guide shaft sleeve 8 is fixedly positioned relative to the base, and the guide rod 3 is slidably engaged with the guide shaft sleeve 8 in the up - down direction.

[0043] The fixed seat 12 is a fixed supporting member (see Figure 2 ), the fixed seat 12 is fixedly arranged relative to the base, and an upward first support surface 21 is provided on the fixed seat 12 (see Figure 2 ), a downward second support surface 22 is provided on the guide rod 3 corresponding to the first support surface 21 (see Figure 2 ), the first support surface 21 is located below the second support surface 22, the first spring 9 is arranged in the up - down direction (see Figure 2 ), the lower end of the first spring 9 presses against the first support surface 21 of the fixed seat 12, the upper end of the first spring 9 presses against the second support surface 22 of the guide rod 3, and the first spring 9 acts in the up - down direction and forces the upper end of the guide rod 3 to always keep in contact with the cam profile of the cam 2 (see Figure 2 ). In this embodiment, the first spring 9 is actually sleeved outside the intake pressure rod 4, see Figure 2This is the best case, but the present utility model is not limited thereto. At least two first springs 9 can be symmetrically arranged on the side of the air inlet pressure rod 4, which is easily understood and accepted by those skilled in the art. Additionally, in order to reduce friction and improve the movement accuracy of the cam guide rod mechanism, a driven roller 6 is provided at the upper end of the guide rod 3 (see Figure 2 ), and the driven roller 6 is rotationally positioned at the upper end of the guide rod 3 through a pin shaft 7 (see Figure 3 ). The guide rod 3 is always in contact and cooperation with the cam 2 rim through the driven roller 6.

[0044] The air inlet pressing mechanism includes an air inlet pressure rod 4, a sealing sleeve 10, and a second spring 11 (see Figure 2 and Figure 3 ), where:

[0045] The air inlet pressure rod 4 is of a rod structure and is arranged in the vertical direction. The upper end of the air inlet pressure rod 4 is fixedly connected to the lower end of the guide rod 3 (the present utility model is not limited thereto, and the air inlet pressure rod 4 and the guide rod 3 can also be designed as an integrally formed structure). An air guiding channel 25 is provided in the air inlet pressure rod 4 along the length direction of the rod (see Figure 2 and Figure 5 ). The air guiding channel 25 is provided with an air inlet and an air outlet on the outside. The air inlet leads to an external compressed air source, and the air outlet is located at the lower end of the air inlet pressure rod 4 and serves as an inflation port.

[0046] In this embodiment, the specific connection between the upper end of the air inlet pressure rod 4 and the lower end of the guide rod 3 is as follows: The lower end of the guide rod 3 is provided with a downward-opening inner hole 28 (see Figure 2 ). The diameter of the inner hole 28 matches the outer diameter of the air inlet pressure rod 4. A positioning groove 29 for determining the position of the air inlet pressure rod 4 in the vertical direction is provided on the outer edge of the air inlet pressure rod 4 (see Figure 2 ). A positioning block 5 is provided corresponding to the positioning groove 29 (see Figure 2 ). The positioning block 5 is provided with a positioning portion that cooperates with the positioning groove 29. In the assembled state, the upper end of the air inlet pressure rod 4 extends into the inner hole 28 at the lower end of the guide rod 3 and cooperates with the inner hole 28 (see Figure 2 ). The positioning portion on the positioning block 5 is engaged with the positioning groove 29 on the air inlet pressure rod 4 (see Figure 2 ). The positioning block 5 is fixed to the lower end of the guide rod 3 by screws, thereby positioning and fixedly connecting the air inlet pressure rod 4 relative to the guide rod 4 in the vertical direction.

[0047] In this embodiment, the air guiding channel 25 extends upward in the air inlet pressure rod 4 into the guide rod 3. The air inlet is arranged on the guide rod 3 and leads to an external compressed air source through a pipe joint 30 (see Figure 2 ). A second sealing ring 31 is provided on the mating section where the upper end of the air inlet pressure rod 4 extends into the inner hole 28 at the lower end of the guide rod 3 to seal the air guiding channel 25 at the connecting section between the air inlet pressure rod 4 and the guide rod 3.Figure 2 ).

[0048] The sealing sleeve 10 is a sleeve structure, and the sealing sleeve 10 is sleeved at the lower end of the air inlet pressure rod 4 (see Figure 2 ), and is in sliding fit with the air inlet pressure rod 4. Limiting steps 32 that cooperate with each other are respectively provided between the inner edge of the sealing sleeve 10 and the outer edge of the air inlet pressure rod 4 (see Figure 2 ). In the assembled state, the limiting steps 32 can limit the position where the sealing sleeve 10 slides downward relative to the air inlet pressure rod (4) (see Figure 2 ). In the limiting state, the lower end of the air inlet pressure rod 4 remains in the sleeve cavity of the sealing sleeve 10 (see Figure 2 ). A third supporting surface 23 facing upward is provided on the sealing sleeve 10 (see Figure 2 ), and a fourth supporting surface 24 facing downward is provided on the fixed seat 12 corresponding to the third supporting surface 23 (see Figure 2 ). The second spring 11 is arranged in the up and down direction. The lower end of the second spring 11 presses against the third supporting surface 23 of the sealing sleeve 10, and the upper end of the second spring 11 presses against the fourth supporting surface 24 of the fixed seat 12. The second spring 11 acts in the up and down direction and forces the sealing sleeve 10 to be in a limiting position of sliding downward relative to the lower end of the air inlet pressure rod 4.

[0049] In this embodiment, the second spring 11 is actually sleeved outside the air inlet pressure rod 4 (see Figure 2 ), which is the best case, but the present invention is not limited thereto. At least two second springs 11 can be symmetrically arranged on the side of the air inlet pressure rod 4, which is easily understood and accepted by those skilled in the art.

[0050] In this embodiment, the lower end surface of the sealing sleeve 10 is an annular sealing surface (made of soft rubber material), and the lower end surface of the air inlet pressure rod 4 serves as a pressing action surface, and the pressing action surface is located within the area of the annular sealing surface (see Figure 2 ). A gap 26 is left between the inner edge of the sealing sleeve 10 and the outer edge at the lower end of the air inlet pressure rod 4 (see Figure 2 ), and the air outlet of the air guiding channel 25 is arranged at the position on the side of the lower end of the air inlet pressure rod 4 corresponding to the gap 26, thereby forming an air inlet.

[0051] In this embodiment, in order to seal between the inner edge of the sealing sleeve 10 and the outer edge of the air inlet pressure rod 4, a first sealing ring 27 (see Figure 2 ), and the first sealing ring 27 is located at the sliding fit section position above the gap 26 to seal the sliding fit section.

[0052] The rotating drive mechanism is the power mechanism of the automatic inflation device of the utility model. The rotating drive mechanism is connected to the cam 2 in the cam guide mechanism, thereby driving the cam guide mechanism to work normally. In this embodiment, the rotating drive mechanism adopts a synchronous belt pulley transmission mechanism 1 (see Figure 2 ), but the utility model is not limited thereto, and a gear transmission mechanism or a motor etc. can also be used to drive. This is understandable and acceptable to those skilled in the art.

[0053] The working principle and working process of this embodiment are described as follows:

[0054] like Figures 2 - 3 As shown, the synchronous pulley transmission mechanism 1 and the cam 2 in the automatic inflation device of the utility model are fixed on the same shaft, and the synchronous pulley transmission mechanism 1 will drive the cam 2 to perform uniform rotational motion. The guide rod 3 and the air intake pressure rod 4 are fixed together by the positioning block 5, and the positioning block 5 is fixedly connected to the guide rod 3 by a screw. The driven roller 6 is connected to the upper end of the guide rod 3 through the pin 7. The guide rod 3 is guided by the guide sleeve 8. Under the drive of the cam 2, it will perform linear reciprocating motion together with the air intake pressure rod 4, and will be reset by the first spring 9 under the positioning block 5. The sealing sleeve 10 and the air intake pressure rod 4 can perform axial relative motion. There is a limiting step 32 at the end of the air intake pressure rod 4 to limit the sealing sleeve 10 in one direction. A second spring 11 is arranged on the other side of the sealing sleeve 10 to apply a downward force to the sealing sleeve 10. There is a fixed seat 12 used as a support for the fixed ends of the first spring 9 and the second spring 11. Both the guide rod 3 and the air inlet pressure rod 4 are provided with an air guide channel 25 for ventilation at the center, and compressed air can enter from the guide rod 3 and be discharged from the lower end of the air inlet pressure rod 4.

[0055] like Figures 4 - 6 As shown, during operation, the entire string of carriers 13 will perform intermittent displacement motion along the guide rail (see Figure 5 ), when each carrier 13 moves to the can feeding station and starts to stay, the can feeding mechanism 14 will send a metal can 15 into the carrier 13, and then the inflation device 18 starts to inflate the carrier 13: the cam 2 of the synchronous belt drive mechanism 1 enters the lifting stage, which will cause the guide rod 3, the air intake pressure rod 4, and the sealing sleeve 10 to move downward synchronously (see Figure 2 ), then the end surface material of the sealing sleeve 10 is made of rubber material, and during the movement, the sealing sleeve 10 will be pressed against the surface of the one-way valve 16 by the second spring 11 (see Figure 4 ), thus forming a sealing effect and staying there. Then the air intake pressure rod 4 will continue to move downward until the one-way valve core 17 is pressed down, so that the one-way valve 16 opens (see Figure 4 ). In this way, the compressed air can enter the carrier 13 through the air intake pressure rod 4 and the one-way valve 16 and maintain this state during the next far rest stage of the cam 2.

[0056] After the vehicle 13 completes the positioning and fixing of the metal tank body 15, the cam 2 enters the return stroke stage. The first spring 9 will drive parts such as the air inlet pressure rod 4 to reset. During the upward movement of the air inlet pressure rod 4, first, the one-way valve spool 17 will move upward accordingly to close the one-way valve (see Figure 4 ), sealing the compressed air inside the vehicle 13. Subsequently, the sealing sleeve 10 pressed on the surface of the one-way valve 16 will be driven upward by the air inlet pressure rod 4 until it returns to the initial position. Then, after the cam 2 enters the near rest stage, parts such as the air inlet pressure rod 4 will remain stationary. The vehicle 13 that has completed inflation will move the metal tank body 15 to the next station, and the next set of vehicle 13 will move to the tank inlet station. After the tank inlet operation is completed, the cam 2 re-enters the lift stage to repeat the above actions, and this cycle is repeated to inflate and fix each vehicle 13 equipped with the metal tank body 15.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic inflation device for bottle and can forming equipment, characterized in that: It includes a cam guide rod mechanism and an air intake pressing mechanism. The air intake pressing direction is defined as the up-and-down direction, and the direction perpendicular to the up-and-down direction is the horizontal direction. It is defined that the bottle and can forming equipment has a base; The cam guide rod mechanism includes a cam (2), a guide rod (3), a guide bushing (8), a fixed seat (12) and a first spring (9), wherein: The cam (2) is a mechanical rotating member, which is rotatably supported relative to the base. The rotation axis of the cam (2) is arranged in the horizontal direction. The cam (2) is a disk cam, and its cam profile is sequentially connected by a lift section, a far rest section, a return section and a near rest section; The guide rod (3) is arranged as a sliding rod in the up-and-down direction. The guide bushing (8) is sleeved outside the guide rod (3) as a guiding member. The guide bushing (8) is fixedly positioned relative to the base, and the guide rod (3) is slidably matched with the guide bushing (8) in the up-and-down direction; The fixed seat (12) is a fixed supporting member, which is fixedly arranged relative to the base. An upward first supporting surface (21) is arranged on the fixed seat (12). A downward second supporting surface (22) is arranged on the guide rod (3) corresponding to the first supporting surface (21). The first supporting surface (21) is located below the second supporting surface (22). The first spring (9) is arranged in the up-and-down direction. The lower end of the first spring (9) presses against the first supporting surface (21) of the fixed seat (12), and the upper end of the first spring (9) presses against the second supporting surface (22) of the guide rod (3). The first spring (9) acts in the up-and-down direction and forces the upper end of the guide rod (3) to always keep in contact with the cam profile of the cam (2); The air intake pressing mechanism includes an air intake pressure rod (4), wherein: The air intake pressure rod (4) is a rod structure and is arranged in the up-and-down direction. The upper end of the air intake pressure rod (4) is fixedly connected to the lower end of the guide rod (3) or the two are integrally formed. An air guide channel (25) is arranged in the air intake pressure rod (4) along the length direction of the rod. The air guide channel (25) is provided with an air inlet and an air outlet on the outside. The air inlet leads to an external compressed air source, and the air outlet is located at the lower end of the air intake pressure rod (4) and serves as an air filling port.

2. The automatic inflation device according to claim 1, characterized in that: The air intake pressing mechanism includes a sealing sleeve (10) and a second spring (11), wherein: The sealing sleeve (10) is of a sleeve structure. The sealing sleeve (10) is sleeved on the lower end of the air inlet pressure rod (4) and is in sliding fit relative to the air inlet pressure rod (4). Limiting steps (32) that cooperate with each other are respectively provided between the inner edge of the sealing sleeve (10) and the outer edge of the air inlet pressure rod (4). In the assembled state, the limiting steps (32) can limit the position where the sealing sleeve (10) slides downward relative to the air inlet pressure rod (4). In the limiting state, the lower end of the air inlet pressure rod (4) remains in the sleeve cavity of the sealing sleeve (10). A third supporting surface (23) facing upward is provided on the sealing sleeve (10). Corresponding to the third supporting surface (23), a fourth supporting surface (24) facing downward is provided on the fixed seat (12). The second spring (11) is arranged in the up-down direction. The lower end of the second spring (11) presses against the third supporting surface (23) of the sealing sleeve (10), and the upper end of the second spring (11) presses against the fourth supporting surface (24) of the fixed seat (12). The second spring (11) acts in the up-down direction and forces the sealing sleeve (10) to be in a limiting position where it slides downward relative to the lower end of the air inlet pressure rod (4).

3. The automatic inflation device according to claim 2, characterized in that: The lower end surface of the sealing sleeve (10) is an annular sealing surface, and the lower end surface of the air inlet pressure rod (4) serves as a pressing action surface, and the pressing action surface is located within the area of the annular sealing surface. A gap (26) is left between the inner edge of the sealing sleeve (10) and the outer edge at the lower end of the air inlet pressure rod (4). The air outlet of the air guiding channel (25) is provided at a position on the side of the lower end of the air inlet pressure rod (4) corresponding to the gap (26), thereby forming an air inlet.

4. The automatic inflation device according to claim 3, characterized in that: A first sealing ring (27) is provided between the inner edge of the sealing sleeve (10) and the outer edge of the air inlet pressure rod (4), and the first sealing ring (27) is located at the sliding fit section position above the gap (26).

5. The automatic inflation device according to claim 1, characterized in that: A driven roller (6) is provided at the upper end of the guide rod (3). The driven roller (6) is rotationally positioned at the upper end of the guide rod (3) through a pin shaft (7). The guide rod (3) is always in contact and cooperation with the cam (2) through the driven roller (6).

6. The automatic inflation device according to claim 1, characterized in that: The specific connection of the upper end of the air inlet pressure rod (4) to the lower end of the guide rod (3) is as follows: The lower end of the guide rod (3) is provided with an inner hole (28) with an open lower end. The aperture of the inner hole (28) matches the outer diameter of the air inlet pressure rod (4). A positioning groove (29) for determining its position in the up-down direction is provided on the outer edge of the air inlet pressure rod (4). A positioning block (5) is provided corresponding to the positioning groove (29). The positioning block (5) is provided with a positioning portion that cooperates with the positioning groove (29). In the assembled state, the upper end of the air inlet pressure rod (4) extends into the inner hole (28) at the lower end of the guide rod (3) and cooperates with the inner hole (28). The positioning portion on the positioning block (5) is engaged with the positioning groove (29) of the air inlet pressure rod (4). The positioning block (5) is fixedly connected to the guide rod (3), thereby positioning and fixedly connecting the air inlet pressure rod (4) relative to the guide rod (3) in the up-down direction.

7. The automatic inflation device according to claim 6, characterized in that: The air guiding channel (25) extends upward within the air inlet pressure rod (4) into the guide rod (3). The air inlet is arranged on the guide rod (3) and leads to an external compressed air source through a pipe joint (30). A second sealing ring (31) is provided on the mating section where the upper end of the air inlet pressure rod (4) extends into the inner hole (28) at the lower end of the guide rod (3).

8. The automatic inflation device according to claim 6, wherein: The positioning block (5) is fixed to the lower end of the guide rod (3) by screws.

9. The automatic inflation device according to claim 1, wherein: It includes a rotational drive mechanism which is in transmission connection with the cam (2) in the cam guide rod mechanism.

10. The automatic inflation device according to claim 9, characterized in that: The rotational drive mechanism is a synchronous pulley drive mechanism (1), a gear drive mechanism, or a motor.

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