Multi-power gas circuit integrated zero-degree rotation pressing cylinder

Abstract

The invention discloses a multi-power gas circuit integrated zero-degree rotation pressing cylinder which comprises an integrated cylinder barrel, a first driving module and two second driving modules, wherein the first driving module and the two second driving modules are arranged on the integrated cylinder barrel; the first driving module is arranged in the middle of the integrated cylinder barrel, and the two second driving modules are located on the two opposite outer sides of the first driving module. Each of the first driving module and the second driving module comprises a plurality of rotary pressing driving mechanisms; a plurality of inner cavities penetrating through the top of the integrated cylinder barrel are formed in the integrated cylinder barrel, and each rotary pressing-down driving mechanism corresponds to one inner cavity; the rotary pressing driving mechanism comprises a rear end driving module and a zero-degree rotation reciprocating assembly connected to the power output end of the rear end driving module; the rear end driving module comprises a plurality of piston assemblies which are connected in series; the integrated cylinder barrel is internally provided with a plurality of first ventilation channels and a plurality of second ventilation channels which are used for controlling the first driving module to achieve rotating and pressing actions. And two third ventilation paths are further arranged in the integrated cylinder barrel, and each third ventilation path is used for controlling one second driving module to achieve the rotary pressing action. Through the design of driving modularization, gas circuit integration, a multi-force structure and the like, the working efficiency is improved, and meanwhile the stability and reliability of the system are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic equipment, and particularly to a multi-fold force air circuit integrated zero-degree rotation and downward pressing cylinder. Background Art

[0002] In industrial automation production, as a common actuator, cylinders are widely used in various mechanical equipment. However, when facing complex and diverse working conditions requirements, the existing rotation and downward pressing cylinders have many deficiencies:

[0003] 1) The air circuit design is relatively simple. A large number of external air circuit components and pipelines are required to achieve complex control functions, which not only increases the complexity of the system and installation costs, but also easily leads to problems such as air leakage and an increase in failure points. Moreover, due to the unreasonable air circuit design, phenomena such as large pressure loss and asynchronous piston movement occur, resulting in a decline in the overall performance of the cylinder and being unable to meet the requirements of industrial production for an efficient and stable power source.

[0004] 2) It is unable to flexibly adjust the output force according to different working scenarios and load requirements. When the load is large, it cannot meet the large thrust output, and when the load is small, there is a problem of energy waste.

[0005] 3) Although the existing multi-fold force cylinders can increase the output force to a certain extent, they are often bulky and not conducive to installation and use in narrow spaces. Summary of the Invention

[0006] The purpose of the present invention is to provide a multi-fold force air circuit integrated zero-degree rotation and downward pressing cylinder. Through designs such as drive modularization, air circuit integration, and multi-fold force structure, while improving work efficiency, the stability and reliability of the system are ensured.

[0007] To achieve the above object, the following technical solutions are adopted:

[0008] A multi-fold air circuit integrated zero-degree rotation pressing cylinder, comprising an integrated cylinder barrel, and a first driving module and two second driving modules arranged on the integrated cylinder barrel; the first driving module is arranged in the middle of the integrated cylinder barrel, and the two second driving modules are located on the opposite outer sides of the first driving module; the first driving module and the second driving module both include a plurality of rotation pressing driving mechanisms; a plurality of inner cavities penetrating through the top of the integrated cylinder barrel are formed on the integrated cylinder barrel, and each rotation pressing driving mechanism is correspondingly arranged in one inner cavity; the rotation pressing driving mechanism includes a rear-end driving module, and a zero-degree rotation reciprocating assembly connected to the power output end of the rear-end driving module; the rear-end driving module is installed in the inner cavity of the integrated cylinder barrel, and the zero-degree rotation reciprocating assembly extends from the inner cavity to the upper part of the integrated cylinder barrel; the rear-end driving module includes a plurality of piston assemblies connected in series; a plurality of first air passages and a plurality of second air passages for controlling the first driving module to perform rotation pressing actions are arranged in the integrated cylinder barrel; each first air passage and each second air passage are respectively used for controlling a part of the rotation pressing driving mechanisms in the first driving module to work; two third air passages are further arranged in the integrated cylinder barrel, and each third air passage is used for controlling a second driving module to perform rotation pressing actions.

[0009] Preferably, each first air passage is used for controlling two of the rotation pressing driving mechanisms in the first driving module to simultaneously perform rotation pressing actions; each second air passage is used for controlling another rotation pressing driving mechanism in the first driving module to perform rotation pressing actions; the piston assembly includes a piston and a piston rod connected to the piston.

[0010] Preferably, the first air passage includes a first air inlet communicating with the outside, a first main air passage arranged vertically between two rotation pressing driving mechanisms, and a first branch air passage communicating between the first main air passage and above each piston; the first air inlet communicates with above one of the uppermost pistons.

[0011] Preferably, the second air passage includes a second air inlet communicating with the outside, a second main air passage arranged vertically on the side of the rotation pressing driving mechanism away from the second air inlet, and a second branch air passage communicating between the second main air passage and above each piston; the second air inlet communicates with above the uppermost piston.

[0012] Preferably, each second driving module includes three rotation pressing driving mechanisms arranged in parallel; the third air passage includes a third air inlet communicating with the outside, a third main air passage arranged vertically inside the middle rotation pressing driving mechanism, a third branch air passage communicating horizontally between the upper parts of every two adjacent pistons, and a fourth branch air passage communicating between the third main air passage and above each piston of the middle rotation pressing driving mechanism.

[0013] Preferably, the zero-degree rotation reciprocating assembly includes a rotating shaft connected to the power output end of the rear-end drive module, a fixed sleeve sleeved on the outer circumference of the middle part of the rotating shaft, a guiding ball movably embedded in the side wall of the fixed sleeve, and a pressing link movably connected to the upper end of the rotating shaft; a guiding groove is recessed in the outer wall of the middle part of the rotating shaft, and the guiding ball is used to roll along the guiding groove; a sliding groove hole is opened in the outer wall of the upper end of the rotating shaft in the vertical direction, and a sliding column matching the sliding groove hole is arranged at the lower end of the pressing link; an elastic member is arranged between the top end surface of the fixed sleeve and the bottom end surface of the pressing link.

[0014] Preferably, the guiding groove includes a spiral part arranged in the middle, a first extension part connected to the lower end of the spiral part, and a second extension part connected to the upper end of the spiral part; the first extension part and the second extension part are opened in the vertical direction; when the guiding ball enters the lowermost end of the second extension part, the sliding column is clamped at the uppermost end of the sliding groove hole.

[0015] Preferably, the diameters of the rotating shafts corresponding to the spiral parts of all the rotation pressing drive mechanisms are the same, and the axial heights of the spiral parts are also the same; the helix angle of the spiral part is less than or equal to 45°; the safety factor of the rotating shaft corresponding to the spiral part is not less than 5 times.

[0016] Preferably, the rotation angle of the rotating shaft of a part of the rotation pressing drive mechanisms is 120°, and the helix angle of the corresponding spiral part is 44.65°; the rotation angle of the rotating shaft of another part of the rotation pressing drive mechanisms is 90°, and the helix angle of the corresponding spiral part is 34.96°.

[0017] Preferably, the integrated cylinder barrel includes three cylinders arranged in a stacked manner in the vertical direction, and a cover plate is arranged at the top of the uppermost cylinder; each rear-end drive module includes four piston assemblies, and the piston rod of the lower piston assembly is connected to the piston of the upper piston assembly.

[0018] Adopting the above scheme, the beneficial effects of the present invention are:

[0019] The present invention provides a multi - fold force pneumatic integrated zero - degree rotation pressing cylinder. Through designs such as drive modularization, pneumatic circuit integration, and multi - fold force structure, while improving work efficiency, the stability and reliability of the system are ensured. Specifically: 1) Drive modularization: By setting a first drive module and two second drive modules, and combining the first air passage, the second air passage, and the third air passage, the output force can be flexibly adjusted according to different working scenarios and load requirements, so as to meet the corresponding output force requirements; 2) Pneumatic circuit integration: By designing the first air passage, the second air passage, and the third air passage, grouped control of multiple rotation - pressing drive mechanisms is realized. While reducing the number of external pneumatic components and pipelines, the response speed of the system is also improved; 3) Multi - fold force structure: A multi - layer force - increasing structure with multiple piston assemblies in series is adopted to achieve the characteristic of multi - fold force output. The overall structure is compact, which is conducive to installation and use in a narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 is a top view of the present invention;

[0022] Figure 3 is Figure 2 a schematic cross - sectional view in the A - A direction of

[0023] Figure 4 is Figure 2 a schematic cross - sectional view in the B - B direction of

[0024] Figure 5 is Figure 2 a schematic cross - sectional view in the C - C direction of

[0025] Figure 6 is Figure 2 a schematic cross - sectional view in the D - D direction of

[0026] Figure 7 is Figure 2 a schematic cross - sectional view in the E - E direction of

[0027] Figure 8 is a perspective view of the rotation - pressing drive mechanism of the present invention;

[0028] Figure 9 is an exploded view of the zero - degree rotation reciprocating assembly of the present invention;

[0029] Figure 10 In (a), it is a schematic structural view of the rotation shaft of the present invention rotating at an angle of 120°;

[0030] Figure 10 In (b), it is a schematic structural view of the rotation shaft of the present invention rotating at an angle of 90°;

[0031] Among them, the description of the attached drawing reference numerals is as follows:

[0032] 1 - integrated cylinder barrel, 2 - rotary pressing drive mechanism,

[0033] 3 - first ventilation passage, 4 - second ventilation passage,

[0034] 5 - third ventilation passage, 6 - cover plate,

[0035] 21 - rear-end drive module, 22 - zero-degree rotary reciprocating component,

[0036] 31 - first air inlet, 32 - first main air passage,

[0037] 33 - first branch air passage, 41 - second air inlet,

[0038] 42 - second main air passage, 43 - second branch air passage,

[0039] 51 - third air inlet, 52 - third main air passage,

[0040] 53 - third branch air passage, 54 - fourth branch air passage,

[0041] 211 - piston, 212 - piston rod,

[0042] 221 - rotating shaft, 222 - fixed sleeve,

[0043] 223 - guide ball, 224 - pressing connecting rod,

[0044] 225 - sliding groove hole, 226 - sliding column,

[0045] 227 - elastic member, 228 - spiral part,

[0046] 229 - first extension part, 230 - second extension part. Detailed implementation manners

[0047] The present invention will be further described in detail below with reference to the attached drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only parts related to the present invention rather than all structures are shown in the attached drawings.

[0048] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0049] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0050] Referring to Figures 1 to 10 As shown, the present invention provides a multi-fold pneumatic circuit integrated zero-degree rotation pressing-down cylinder, which includes an integrated cylinder barrel 1, and a first driving module and two second driving modules arranged on the integrated cylinder barrel 1; the first driving module is arranged in the middle of the integrated cylinder barrel 1, and the two second driving modules are located on the opposite outer sides of the first driving module; the first driving module and the second driving module both include a plurality of rotation pressing-down driving mechanisms 2; a plurality of inner cavities penetrating through the top of the integrated cylinder barrel 1 are formed on the integrated cylinder barrel 1, and each rotation pressing-down driving mechanism 2 is correspondingly arranged in one inner cavity; the rotation pressing-down driving mechanism 2 includes a rear-end driving module 21 and a zero-degree rotation reciprocating assembly 22 connected to the power output end of the rear-end driving module 21; the rear-end driving module 21 is installed in the inner cavity of the integrated cylinder barrel 1, and the zero-degree rotation reciprocating assembly 22 extends from the inner cavity to be arranged above the integrated cylinder barrel 1; the rear-end driving module 21 includes a plurality of piston assemblies connected in series; a plurality of first air passages 3 and a plurality of second air passages 4 for controlling the first driving module to perform a rotation pressing-down action are arranged in the integrated cylinder barrel 1; each first air passage 3 and each second air passage 4 are respectively used to control a part of the rotation pressing-down driving mechanisms 2 in the first driving module to work; two third air passages 5 are further arranged in the integrated cylinder barrel 1, and each third air passage 5 is used to control a second driving module to perform a rotation pressing-down action.

[0051] The technical solution disclosed by the present invention realizes flexible adjustment of the cylinder output force by reasonably arranging a plurality of rotary pressing drive mechanisms 2 in a first drive module and two second drive modules, and combining a first air passage 3, a second air passage 4, and a third air passage 5. Specifically, when facing different load requirements, different positions and numbers of rotary pressing drive mechanisms 2 can be selected to work. In light load conditions, only some of the rotary pressing drive mechanisms 2 are enabled to achieve precise and energy-saving operation; while in heavy load conditions, all the rotary pressing drive mechanisms 2 can be enabled to work together, so as to achieve a strong output force and meet the working requirements of large loads, enabling the cylinder to adapt to a variety of different working scenarios and greatly expanding its application range.

[0052] Each first air passage 3 is used to control two of the rotary pressing drive mechanisms 2 in the first drive module to simultaneously perform rotary pressing actions; each second air passage 4 is used to control another rotary pressing drive mechanism 2 in the first drive module to perform a rotary pressing action; the piston assembly includes a piston and a piston rod connected to the piston.

[0053] The integrated cylinder barrel 1 is made of high-strength aluminum alloy material to ensure good strength and lightweight characteristics of the cylinder. The piston is made of wear-resistant and low-friction coefficient material to improve its wear resistance and sealing performance.

[0054] The first air passage 3 includes a first air inlet 31 communicating with the outside, a first main air passage 32 arranged vertically between two rotary pressing drive mechanisms 2, and a first branch air passage 33 communicating between the first main air passage 32 and above each piston; the first air inlet 31 communicates with above one of the pistons in the uppermost layer.

[0055] The second air passage 4 includes a second air inlet 41 communicating with the outside, a second main air passage 42 arranged vertically on the side of the rotary pressing drive mechanism 2 away from the second air inlet 41, and a second branch air passage 43 communicating between the second main air passage 42 and above each piston; the second air inlet 41 communicates with above the piston in the uppermost layer.

[0056] Each second drive module includes three rotary pressing drive mechanisms 2 arranged in parallel; the third air passage 5 includes a third air inlet 51 communicating with the outside, a third main air passage 52 arranged vertically inside the middle rotary pressing drive mechanism 2, a third branch air passage 53 communicating horizontally between the upper parts of every two adjacent pistons, and a fourth branch air passage 54 communicating between the third main air passage 52 and above each piston of the middle rotary pressing drive mechanism 2.

[0057] Further, in the same ventilation path of the first ventilation path 3, the second ventilation path 4, and the third ventilation path 5, the inner diameters of the air inlet, the main air path, and the branch air path decrease in sequence.

[0058] In an ideal state, when the intake air volume and speed above and below the piston of the same piston assembly are the same, the response speed of the piston assembly can be guaranteed. The present invention realizes a highly integrated air path design through the first ventilation path 3, the second ventilation path 4, and the third ventilation path 5. When realizing the rotation and pressing-down action, through the design of the first main air path 32 and the first branch air path 33 in the first ventilation path 3, the second main air path 42 and the second branch air path 43 in the second ventilation path 4, and the third main air path 52, the third branch air path 53, and the fourth branch air path 54 in the third ventilation path 5, the gas flow path is optimized by the cooperation of the main air path and the branch air path, so as to realize the precise distribution and control of compressed air inside the cylinder, improve the gas distribution uniformity, and thus improve the problem of asynchronous movement of multiple piston assemblies.

[0059] The zero-degree rotation reciprocating assembly 22 includes a rotating shaft 221 connected to the power output end of the rear-end driving module 21, a fixed sleeve 222 sleeved on the outer circumference of the middle part of the rotating shaft 221, a guiding ball 223 movably embedded in the side wall of the fixed sleeve 222, and a pressing-down connecting rod 224 movably connected to the upper end of the rotating shaft 221; a guiding groove is recessed on the outer wall of the middle part of the rotating shaft 221, and the guiding ball 223 is used for rolling along the guiding groove; a sliding groove hole 225 is opened on the outer wall of the upper end of the rotating shaft 221 in the vertical direction, and a sliding column 226 matched with the sliding groove hole 225 is arranged at the lower end of the pressing-down connecting rod 224; an elastic member 227 is arranged between the top end surface of the fixed sleeve 222 and the bottom end surface of the pressing-down connecting rod 224.

[0060] The guiding groove includes a spiral part 228 arranged in the middle, a first extending part 229 connected to the lower end of the spiral part 228, and a second extending part 230 connected to the upper end of the spiral part 228; the first extending part 229 and the second extending part 230 are opened in the vertical direction; when the guiding ball 223 enters the lowermost end of the second extending part 230, the sliding column 226 is clamped at the uppermost end of the sliding groove hole 225.

[0061] The working process of the zero-degree rotation reciprocating assembly 22 is as follows:

[0062] 1) When the piston assembly moves downward, when the guiding ball 223 rolls along the first extending part 229 of the groove, under the action of the elastic member 227, the rotating shaft 221 rotates, and at the same time, the sliding column 226 slides in the hole to a position close to the maximum stroke of the sliding groove hole 225; during this process, due to the sliding column 226 hole and the elastic member 227, the pressing-down connecting rod 224 only makes a co-planar rotational movement, that is, zero-degree rotation, and will not follow the rotating shaft 221 downward;

[0063] 2) During the process that the guiding ball 223 engages with the corner of the second extension part 230 through the spiral part 228 (when just entering the lowermost end of the second extension part 230), the sliding column 226 slides along the sliding groove hole 225 to the maximum stroke at the upper end of the sliding groove hole 225;

[0064] 3) When the guiding ball 223 rolls along the second extension part 230 of the guiding groove, the rotary shaft 221 drives the downward pressing connecting rod 224 to move downward through the sliding column 226 and the sliding groove hole 225, realizing the downward pressing action.

[0065] In order to enable the rotary downward pressing cylinder to be applied in a narrow space, it is necessary to minimize the overall height of the rotary downward pressing cylinder. And to compress the overall height of the rotary downward pressing cylinder, one of the key points lies in compressing the axial height H of the spiral part 228. The analysis of the relationship among the helix angle θ of the spiral part 228, the arc length L of the spiral part 228, the diameter d of the rotary shaft 221 (the diameter of the rotary shaft 221 corresponding to the spiral part 228), and the axial height H of the spiral part 228 is as follows:

[0066] When the helix angle θ of the spiral part 228 is smaller, the frictional force when the guiding ball 223 rolls in the spiral part 228 is smaller, so the response speed of the rotary motion is faster. However, when the helix angle θ of the spiral part 228 is smaller, the arc length L of the spiral part 228 will be longer. According to the arc length L of the spiral part 228 = πd / 4H, when the helix angle θ of the spiral part 228 decreases, in order to maintain the same arc length L of the spiral part 228, the axial height H of the spiral part 228 can be reduced, but the diameter d of the rotary shaft 221 also needs to be reduced accordingly. It can be seen that too small a helix angle θ of the spiral part 228 will reduce the diameter d of the rotary shaft 221, thus affecting the rigidity of the rotary shaft 221.

[0067] Regarding the rotary shaft 221, the relationship among its safety factor, the compressive strength of the material, and the stress value of the dangerous section is a key factor to ensure that the rotary shaft 221 has sufficient strength and rigidity during use. The following is the analysis of the relationship among these factors: The safety factor S = the compressive strength of the material / the stress value of the dangerous section. In order to ensure that the rotary shaft 221 has a sufficient safety factor and considering the comprehensive factors of the compressive strength of the material and cost, the rotary shaft 221 is made of bearing steel. After selecting the material of the rotary shaft 221, the stress value of the dangerous section of the rotary shaft is corrected by changing the geometric shape, processing technology, etc. of the rotary shaft 221 to ensure that the safety factor of the rotary shaft 221 is not less than 5 times. It is necessary to reasonably adjust the diameter d of the rotary shaft 221 while reducing the helix angle θ of the spiral part 228.

[0068] In a specific embodiment, the first driving module includes 6 rotary downward pressing driving mechanisms 2, and the second driving module includes 3 rotary downward pressing driving mechanisms 2. Please continue to refer to Figure 2, a total of 12 rotary pressing drive mechanisms 2, numbered 1-12, with smooth and consistent movements. Among them, the 1st, 2nd, 6th, 7th, 8th, and 12th are the 6 rotary pressing drive mechanisms 2 of the first drive module, the 3rd, 4th, and 5th are the 3 rotary pressing drive mechanisms 2 of one of the second drive modules, and the 9th, 10th, and 11th are the 3 rotary pressing drive mechanisms 2 of the other second drive module. When the first drive module realizes the rotary pressing action, the 2 rotary pressing drive mechanisms 2 of the 2nd and 6th share a first ventilation path, the 2 rotary pressing drive mechanisms 2 of the 8th and 12th share a first ventilation path 3, and the rotary pressing drive mechanisms 2 of the 1st and 7th each use a second ventilation path 4. The independent air paths make their actions independent and do not interfere with each other during operation.

[0069] At the same time, by designing the opening direction of the spiral part 228, the arc length L of the spiral part 228, and the body angle θ of the spiral part 228, when ventilating, the rotary pressing drive mechanisms 2 of the 6th and 12th press down and rotate counterclockwise, and the rotary pressing drive mechanisms 2 of the 1st, 2nd, 3rd, 4th, 5th, 7th, 8th, 9th, 10th, and 11th press down and rotate clockwise; the rotary pressing drive mechanisms 2 of the 9th and 11th rotate at an angle of 120°, and the rotary pressing drive mechanisms 2 of the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 10th, and 12th rotate at an angle of 90°.

[0070] To ensure the synchronization of the movements of all the rotary pressing drive mechanisms 2, the diameters d of the rotary shafts 221 of all the rotary pressing drive mechanisms 2 are set to be the same, the axial heights H of the spiral parts 228 are also the same, and the body angle θ of the spiral part 228 is less than or equal to 45°. In a specific embodiment, the rotary pressing drive mechanism 2 of the 9th and 11th rotates at an angle of 120°, and the corresponding body angle θ of the spiral part 228 is 44.65°, as shown in Figure 10 (a) in; the rotary pressing drive mechanisms 2 of the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 10th, and 12th rotate at an angle of 90°, and the corresponding body angle θ of the spiral part 228 is 34.96°, as shown in Figure 10 (b) in; thus, while minimizing the axial height H of the spiral part 228, the smoothness of the movement is taken into account.

[0071] The integrated cylinder block 1 includes three cylinder bodies arranged in a stacked manner in the vertical direction, and a cover plate 6 is provided at the top of the uppermost cylinder body; each rear-end drive module 21 includes four piston assemblies, and the piston rod of the lower piston assembly is connected to the piston of the upper piston assembly. Each rear-end drive module 21 includes four piston assemblies connected in series, that is, each rotary pressing drive mechanism 2 can achieve a four-fold force output. In order to achieve a stable and reliable four-fold force output, a multi-layer intensifying cylinder structure is adopted. Through the superposition and combination of multiple piston assemblies, a multi-fold output effect under the same air source pressure is achieved. The specific working process is as follows: When compressed air enters the cylinder through the air passage, it is dispersed in each branch air passage through the main air passage, thereby pushing multiple piston assemblies to move together. According to the relationship F = P * S among pressure F, pressure P, and area S, when the pressure P remains unchanged, the larger the piston force area S in the piston assembly, the greater the output force F, thus achieving a four-fold force output.

[0072] Taking the mobile phone shell processing production line as an example, when processing the mobile phone shell, it is necessary to accurately position and clamp the mobile phone shell. The multi-fold force air circuit integrated zero-degree rotary pressing cylinder provided by the present invention drives the pressing block to press down and position the mobile phone shell by connecting and arranging a pressing block at the top end of the pressing link 224. It can provide sufficient clamping force to ensure that the mobile phone shell does not displace during the processing process. At the same time, its zero-degree rotary pressing function can accurately rotate the pressing block to the specified position and press it down, realizing the accurate positioning and clamping of the mobile phone shell, and ensuring the processing quality and accuracy.

[0073] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A multi-fold air circuit integrated zero-degree rotation downward pressing cylinder, characterized in that, It includes an integrated cylinder barrel, a first driving module and two second driving modules provided on the integrated cylinder barrel; the first driving module is provided in the middle of the integrated cylinder barrel, and the two second driving modules are located on the opposite outer sides of the first driving module; both the first driving module and the second driving module include a plurality of rotary pressing driving mechanisms; a plurality of inner cavities penetrating through the top of the integrated cylinder barrel are formed on the integrated cylinder barrel, and each rotary pressing driving mechanism is arranged corresponding to one inner cavity; the rotary pressing driving mechanism includes a rear-end driving module and a zero-degree rotary reciprocating component connected to the power output end of the rear-end driving module; the rear-end driving module is installed in the inner cavity of the integrated cylinder barrel, and the zero-degree rotary reciprocating component extends from the inner cavity to the upper part of the integrated cylinder barrel; the rear-end driving module includes a plurality of piston components connected in series; a plurality of first air passages and a plurality of second air passages for controlling the first driving module to perform a rotary pressing action are arranged in the integrated cylinder barrel; each first air passage and each second air passage are respectively used to control a part of the rotary pressing driving mechanisms in the first driving module to work; two third air passages are also arranged in the integrated cylinder barrel, and each third air passage is used to control a second driving module to perform a rotary pressing action.

2. The multi-fold pneumatic circuit integrated zero-degree rotation pressing cylinder according to claim 1, characterized in that Each first air passage is used to control two of the rotary pressing driving mechanisms in the first driving module to simultaneously perform a rotary pressing action; each second air passage is used to control another rotary pressing driving mechanism in the first driving module to perform a rotary pressing action; the piston component includes a piston and a piston rod connected to the piston.

3. The multi-fold pneumatic circuit integrated zero-degree rotation pressing cylinder according to claim 2, characterized in that, The first air passage includes a first air inlet communicating with the outside, a first main air passage arranged vertically between two rotary pressing driving mechanisms, and a first branch air passage communicating between the first main air passage and above each piston; the first air inlet communicates with above one of the uppermost pistons.

4. The multi-fold air circuit integrated zero-degree rotation pressing cylinder according to claim 3, characterized in that, The second air passage includes a second air inlet communicating with the outside, a second main air passage arranged vertically on the side of the rotary pressing driving mechanism away from the second air inlet, and a second branch air passage communicating between the second main air passage and above each piston; the second air inlet communicates with above the uppermost piston.

5. The multi-fold air circuit integrated zero-degree rotation pressing cylinder according to claim 2, characterized in that, Each second driving module includes three rotary pressing driving mechanisms arranged in parallel; the third air passage includes a third air inlet communicating with the outside, a third main air passage arranged vertically inside the middle rotary pressing driving mechanism, a third branch air passage communicating horizontally between the upper parts of every two adjacent pistons, and a fourth branch air passage communicating between the third main air passage and above each piston of the middle rotary pressing driving mechanism.

6. The multi-fold air circuit integrated zero-degree rotation pressing cylinder according to claim 1, wherein, The zero-degree rotation reciprocating assembly includes a rotating shaft connected to the power output end of the rear-end drive module, a fixed sleeve sleeved on the outer circumference of the middle part of the rotating shaft, a guiding ball movably embedded in the side wall of the fixed sleeve, and a downward pressing connecting rod movably connected to the upper end of the rotating shaft; a guiding groove is recessed in the outer wall of the middle part of the rotating shaft, and the guiding ball is used to roll along the guiding groove; a sliding groove hole is formed in the outer wall of the upper end of the rotating shaft in the vertical direction, and a sliding column matching the sliding groove hole is arranged at the lower end of the downward pressing connecting rod; an elastic member is arranged between the top end surface of the fixed sleeve and the bottom end surface of the downward pressing connecting rod.

7. The multi-fold pneumatic circuit integrated zero-degree rotation pressing cylinder according to claim 6, wherein The guiding groove includes a spiral part arranged in the middle, a first extension part connected to the lower end of the spiral part, and a second extension part connected to the upper end of the spiral part; the first extension part and the second extension part are arranged in the vertical direction; when the guiding ball enters the lowermost end of the second extension part, the sliding column is clamped at the uppermost end of the sliding groove hole.

8. The multi-stage pneumatic circuit integrated zero-degree rotation pressing cylinder according to claim 7, characterized in that, The diameters of the rotating shafts corresponding to the spiral parts of all the rotary downward pressing drive mechanisms are the same, and the axial heights of the spiral parts are also the same; the helix angle of the spiral part is less than or equal to 45°; the safety factor of the rotating shaft corresponding to the spiral part is not less than 5 times.

9. The multi-fold pneumatic circuit integrated zero-degree rotation pressing cylinder according to claim 8, wherein The rotation angle of the rotating shaft of a part of the rotary downward pressing drive mechanisms is 120°, and the helix angle of the corresponding spiral part is 44.65°; the rotation angle of the rotating shaft of another part of the rotary downward pressing drive mechanisms is 90°, and the helix angle of the corresponding spiral part is 34.96°.

10. The multi-fold air circuit integrated zero-degree rotation pressing cylinder according to claim 2, characterized in that, The integrated cylinder barrel includes three cylinders arranged in a stacked manner in the vertical direction, and a cover plate is arranged at the top of the uppermost cylinder; each rear-end drive module includes four piston assemblies, and the piston rod of the lower piston assembly is connected to the piston of the upper piston assembly.

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