Rotary pressing cylinder capable of rotating bidirectionally

Abstract

The invention relates to the technical field of rotary pressing cylinders, in particular to a rotary pressing cylinder capable of rotating bidirectionally, which comprises a cylinder body, a guide column arranged in the cylinder body and a piston pressing block assembly, and is characterized in that a left-handed guide groove and a right-handed guide groove are formed in the guide column; the piston pressing block assembly comprises a guide pin used for being matched with the left-handed guide groove or the right-handed guide groove, and a reversing channel used for enabling the guide pin to be switched between the left-handed guide groove and the right-handed guide groove is further formed in the guide column. Compared with an existing rotary pressing cylinder which can only conduct rotary pressing in a single direction, the rotary pressing cylinder can conduct rotary pressing leftwards and can also conduct rotary pressing rightwards, the adaptability is high, the rotary pressing direction can be flexibly switched according to specific application scenes, model selection in advance is not needed, equipment design is better facilitated, only one model needs to be produced, and the production cost is reduced. Production can be facilitated, and inventory pressure can be reduced.

Description

Technical field:

[0001] The present invention relates to the technical field of rotary pressing cylinders, and in particular to a rotary pressing cylinder capable of bidirectional rotation. Background technology:

[0002] The rotary pressing cylinder is an actuator that combines rotary action and linear pressing action. It is widely used in clamping, pressing, assembly and other scenarios in automation equipment.

[0003] The existing rotary pressing cylinders can only be rotated and pressed in one direction, that is, the existing rotary pressing cylinders are divided into two types: left-hand type and right-hand type. The left-hand type rotary pressing cylinder can only be rotated and pressed to the left, and the right-hand type rotary pressing cylinder can only be rotated and pressed to the right. Since the left-hand type rotary pressing cylinder and the right-hand type rotary pressing cylinder cannot be used interchangeably, the existing rotary pressing cylinders have the following limitations: 1. For the application party, there is a problem of poor adaptability, and it is necessary to select the type in advance according to the equipment design requirements, that is, it is necessary to select the type in advance according to the equipment design requirements. 1. Purchase the corresponding number of left-hand rotating rotary downward pressure cylinders and right-hand rotating rotary downward pressure cylinders respectively. When the equipment layout changes, it may happen that the number of rotary downward pressure cylinders of one model is too large and the number of rotary downward pressure cylinders of the other model is insufficient. Not only does it need to re-purchase the rotary downward pressure cylinders of the insufficient model, but it will also cause waste of the rotary downward pressure cylinders of the excessive model. 2. For the manufacturer, it is necessary to produce and stock the two models of rotary downward pressure cylinders separately at the same time, which is not only troublesome to produce but also puts a lot of pressure on inventory. Summary of the invention:

[0004] The purpose of the present invention is to address the shortcomings of the existing technology and provide a rotary pressing cylinder that can rotate in both directions. It can be rotated and pressed to the left or to the right. It has strong adaptability and can flexibly switch the direction of rotation and pressing according to specific application scenarios. It does not require advance selection and is more conducive to equipment design. Only one model needs to be produced, which can facilitate production and reduce inventory pressure.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a rotary downward-pressing cylinder that can rotate in both directions, including a cylinder body, a guide column arranged in the cylinder body, and a piston pressure block assembly, characterized in that: the guide column is formed with a left-hand guide groove and a right-hand guide groove, and the piston pressure block assembly includes a guide pin for cooperating with the left-hand guide groove or the right-hand guide groove, and the guide column is also formed with a reversing channel for the guide pin to switch between the left-hand guide groove and the right-hand guide groove; when the guide pin is located in the left-hand guide groove, the guide column guides the piston pressure block assembly to rotate and press to the left; when the guide pin is located in the right-hand guide groove, the guide column guides the piston pressure block assembly to rotate and press to the right.

[0006] A further improvement to the above scheme is that the left-handed guide groove includes a left vertical downward pressure groove section in the shape of a vertical strip groove and a left spiral downward pressure groove section in the shape of a spiral groove, the top of the left vertical downward pressure groove section is connected with the bottom of the left spiral downward pressure groove section, and when the guide pin is located in the left vertical downward pressure groove section, the guide column guides the piston pressure block assembly to move vertically downward, and when the guide pin is located in the left spiral downward pressure groove section, the guide column guides the piston pressure block assembly to move left spirally downward; the right-handed guide groove includes a right vertical downward pressure groove section in the shape of a vertical strip groove and a right spiral downward pressure groove section in the shape of a spiral groove, the top of the right vertical downward pressure groove section is connected with the bottom of the right spiral downward pressure groove section, and when the guide pin is located in the right vertical downward pressure groove section, the guide column guides the piston pressure block assembly to move vertically downward, and when the guide pin is located in the right spiral downward pressure groove section, the guide column guides the piston pressure block assembly to move right spirally downward.

[0007] A further improvement to the above solution is that the left spiral downward pressure groove section and the right spiral downward pressure groove section are respectively spiral along the circumferential direction of the guide column.

[0008] A further improvement to the above solution is that the left spiral downward pressure groove section protrudes below the right spiral downward pressure groove section along the circumferential direction of the guide column.

[0009] A further improvement to the above solution is that the present invention also includes a height-limiting component for preventing the guide pin from sliding excessively upward in the left-hand spiral downward groove section.

[0010] A further improvement to the above scheme is that a piston cavity is formed in the cylinder body, the piston pressure block assembly includes a piston seat mounted on the guide column, and the height limiting assembly includes a fixed height limiting block arranged at the top of the piston cavity and a movable height limiting block arranged at the top of the piston seat; when the guide pin is located at the top of the right spiral downward pressure groove section, the fixed height limiting block and the movable height limiting block are staggered; when the guide pin is located at the top of the left spiral downward pressure groove section, the bottom of the fixed height limiting block is against the top of the movable height limiting block.

[0011] A further improvement to the above scheme is that a piston cavity is formed in the cylinder body, the piston pressure block assembly includes a piston seat sleeved on the guide column, the height limiting assembly includes a fixed outer ring height limiting block arranged at the top of the piston cavity, a fixed inner ring height limiting block arranged at the top of the piston cavity, a movable outer ring height limiting block arranged at the top of the piston seat, and a movable inner ring height limiting block arranged at the top of the piston seat, the fixed outer ring height limiting block is mirror-symmetrically arranged concentrically with the fixed inner ring height limiting block, and the movable outer ring height limiting block is mirror-symmetrically arranged concentrically with the movable inner ring height limiting block; when the guide pin is located at the top of the right spiral downward pressure groove section, the fixed outer ring height limiting block and the movable outer ring height limiting block are mirror-symmetrically arranged, and the fixed inner ring height limiting block and the movable inner ring height limiting block are mirror-symmetrically arranged; when the guide pin is located at the top of the left spiral downward pressure groove section, the bottom of the fixed outer ring height limiting block is against the top of the movable outer ring height limiting block, and the bottom of the fixed inner ring height limiting block is against the top of the movable inner ring height limiting block.

[0012] A further improvement to the above scheme is that a piston chamber is formed in the cylinder body, the piston chamber includes a vertical downward pressure chamber, a spiral downward pressure chamber arranged at the top of the vertical downward pressure chamber, the left vertical downward pressure groove section and the right vertical downward pressure groove section are respectively located in the vertical downward pressure chamber, the left spiral downward pressure groove section and the right spiral downward pressure groove section are respectively located in the spiral downward pressure chamber, and the inner diameter of the spiral downward pressure chamber is larger than the inner diameter of the vertical downward pressure chamber.

[0013] A further improvement to the above solution is that an anti-misdirection reversing assembly is provided on the reversing channel, and the anti-misdirection reversing assembly includes a retractable block that can slide back and forth at the reversing channel position, and a compression spring clamped between the retractable block and the guide column.

[0014] A further improvement to the above scheme is that there are at least two left-handed guide grooves and right-handed guide grooves respectively, and the left-handed guide grooves are arranged in an array along the circumferential direction of the guide column, and the right-handed guide grooves are arranged in an array along the circumferential direction of the guide column. The piston pressure block assembly includes the same number of guide pins as the left-handed guide grooves or the right-handed guide grooves, and each guide pin is simultaneously located in each left-handed guide groove or simultaneously located in each right-handed guide groove.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a bidirectionally rotatable rotary pressing cylinder, comprising a cylinder body, a guide column arranged in the cylinder body, and a piston pressing block assembly, characterized in that: the guide column is formed with a left-hand guide groove and a right-hand guide groove, the piston pressing block assembly includes a guide pin for cooperating with the left-hand guide groove or the right-hand guide groove, and the guide column is further formed with a reversing channel for the guide pin to switch between the left-hand guide groove and the right-hand guide groove; when the guide pin is located in the left-hand guide groove, the guide column guides the piston pressing block assembly to rotate and press to the left; when the guide pin is located in the right-hand guide groove, the guide column guides the piston pressing block assembly to rotate and press to the right;

[0016] The guide column of the present invention is provided with a left-hand guide groove for guiding the piston pressure block assembly to rotate and press leftward, and a right-hand guide groove for guiding the piston pressure block assembly to rotate and press rightward. The direction of rotation and pressing can be switched by switching the guide pin between the left-hand guide groove and the right-hand guide groove; when it is necessary to rotate and press leftward, the guide pin is pushed into the left-hand guide groove, and as the piston pressure block assembly is pushed up and pressed down, the guide pin moves along the left-hand guide groove, and accordingly, the piston pressure block assembly rotates leftward to press down and rotates rightward to rise and reset; when it is necessary to rotate and press rightward, the guide pin is pushed into the left-hand guide groove, and the guide pin moves along the left-hand guide groove. The guide pin is moved from the left-hand guide groove through the reversing channel and into the right-hand guide groove. As the piston pressure block assembly is pushed up and pressed down, the guide pin moves along the right-hand guide groove. Accordingly, the piston pressure block assembly rotates to the right and presses down, and rotates to the left and rises to reset. Compared with the existing rotary pressing cylinder that can only rotate and press in a single direction, the present invention can rotate and press to the left or to the right. It has strong adaptability and can flexibly switch the direction of rotation and pressing according to specific application scenarios. There is no need for advance selection, which is more conducive to equipment design. Only one model needs to be produced, which can facilitate production and reduce inventory pressure. Description of the drawings:

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the height limiting component of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the guide column of the present invention.

[0021] Figure 5 for Figure 4 Schematic diagram of the structure from another perspective.

[0022] Explanation of the accompanying drawings: cylinder body 1, piston chamber 11, vertical downward pressure chamber 111, spiral downward pressure chamber 112, upper drive port 12, lower drive port 13, guide column 2, left-handed guide groove 21, left vertical downward pressure groove section 211, left spiral downward pressure groove section 212, right-handed guide groove 22, right vertical downward pressure groove section 221, right spiral downward pressure groove section 222, reversing channel 23, piston pressure block assembly 3, guide pin 31, piston seat 32, sealing ring 33, piston rod 34, downward pressure block 35, height limit assembly 4, fixed height limit block 41, movable height limit block 42, fixed outer ring height limit block 43, fixed inner ring height limit block 44, movable outer ring height limit block 45, movable inner ring height limit block 46, anti-misdirection reversing assembly 5, retractable block 51, compression spring 52. Specific implementation method:

[0023] The present invention will be further described below with reference to the accompanying drawings. Figure 1-5 As shown, the present invention includes a cylinder body 1, a guide column 2 provided in the cylinder body 1, and a piston pressing block assembly 3, characterized in that: the guide column 2 is formed with a left-handed guide groove 21 and a right-handed guide groove 22, the piston pressing block assembly 3 includes a guide pin 31 for cooperating with the left-handed guide groove 21 or the right-handed guide groove 22, the guide column 2 is further formed with a reversing channel 23 for the guide pin 31 to switch between the left-handed guide groove 21 and the right-handed guide groove 22, the left-handed guide groove 21 and the right-handed guide groove 22 are connected through the reversing channel 23; when When the guide pin 31 is in the left-hand guide groove 21, the guide column 2 guides the piston pressing block assembly 3 to rotate and press to the left; when the guide pin 31 is in the right-hand guide groove 22, the guide column 2 guides the piston pressing block assembly 3 to rotate and press to the right; the guide column 2 of the present invention is provided with a left-hand guide groove 21 for guiding the piston pressing block assembly 3 to rotate and press to the left and a right-hand guide groove 22 for guiding the piston pressing block assembly 3 to rotate and press to the right. The direction of rotation and pressing can be switched by switching between the two grooves 22; when it is necessary to rotate and press to the left, the guide pin 31 is pushed into the left guide groove 21, and as the piston pressing block assembly 3 is pushed up and pressed down, the guide pin 31 moves along the left guide groove 21, and accordingly, the piston pressing block assembly 3 rotates to the left and presses down and rotates to the right and rises to reset; when it is necessary to rotate and press to the right, the guide pin 31 is pushed from the left guide groove 21 through the reversing channel 23 and pushed into the right guide groove 22, and as the piston pressing block assembly 3 is pushed up and pressed down, the guide pin 31 moves along the left guide groove 21, and accordingly, the piston pressing block assembly 3 rotates to the left and presses down and rotates to the right and rises to reset; The part 3 is pushed up and pressed down, and the guide pin 31 moves along the right-hand guide groove 22. Accordingly, the piston pressure block assembly 3 is rotated to the right to press down and rotated to the left to rise and reset. Compared with the existing rotary pressing cylinder which can only rotate and press in a single direction, the present invention can rotate and press to the left or to the right. It has strong adaptability and can flexibly switch the direction of rotation and pressing according to specific application scenarios. There is no need to select the model in advance, which is more conducive to equipment design. Only one model needs to be produced, which can facilitate production and reduce inventory pressure.

[0024] The left-handed guide groove 21 includes a left vertical downward-pressing groove section 211 in the shape of a vertical strip groove and a left spiral downward-pressing groove section 212 in the shape of a spiral groove. The top of the left vertical downward-pressing groove section 211 is connected to the bottom of the left spiral downward-pressing groove section 212. When the guide pin 31 is located in the left vertical downward-pressing groove section 211, the guide column 2 guides the piston pressure block assembly 3 to move vertically downward. When the guide pin 31 is located in the left spiral downward-pressing groove section 212, the guide column 2 guides the piston pressure block assembly 3 to move left spirally downward. The right-handed guide groove 22 includes a right vertical downward-pressing groove section 221 in the shape of a vertical strip groove and a right spiral downward-pressing groove section 222 in the shape of a spiral groove. The top of the pressing groove section 221 is connected to the bottom of the right spiral pressing groove section 222. When the guide pin 31 is located in the right vertical pressing groove section 221, the guide column 2 guides the piston pressing block assembly 3 to move vertically downward. When the guide pin 31 is located in the right spiral pressing groove section 222, the guide column 2 guides the piston pressing block assembly 3 to move in the right spiral downward. When the guide pin 31 is located in the left-handed guide groove 21 and the piston pressing block assembly 3 is pressed downward by an external power mechanism, i.e., air pressure or oil pressure, the guide pin 31 first moves downward in a spiral along the left spiral pressing groove section 212. Accordingly, the piston pressing block assembly 3 rotates and presses to the left, and the guide pin 31 then moves along the left vertical The downward pressure groove section 211 moves vertically downward, and accordingly, the piston pressing block assembly 3 is pressed vertically downward; when the guide pin 31 is located in the left-handed guide groove 21 and the piston pressing block assembly 3 is pushed upward by an external power mechanism, i.e., air pressure or oil pressure, the guide pin 31 first moves vertically upward along the left vertical downward pressure groove section 211, and accordingly, the piston pressing block assembly 3 rises vertically, and the guide pin 31 then moves upward in a spiral along the left spiral downward pressure groove section 212, and accordingly, the piston pressing block assembly 3 rotates right and rises to reset; when the guide pin 31 is located in the right-handed guide groove 22 and the piston pressing block assembly 3 is pressed downward by an external power mechanism, i.e., air pressure or oil pressure, the guide pin 3 1 first moves downward in a spiral along the right spiral downward pressing groove section 222, and accordingly, the piston pressing block assembly 3 rotates and presses rightward, and the guide pin 31 then moves vertically downward along the right vertical downward pressing groove section 221, and accordingly, the piston pressing block assembly 3 presses vertically downward; when the guide pin 31 is located in the right-hand guide groove 22 and the piston pressing block assembly 3 is pushed upward by an external power mechanism, i.e., air pressure or oil pressure, the guide pin 31 first moves vertically upward along the right vertical downward pressing groove section 221, and accordingly, the piston pressing block assembly 3 rises vertically, and the guide pin 31 then moves upward in a spiral along the right spiral downward pressing groove section 222, and accordingly, the piston pressing block assembly 3 rotates and rises to the left to reset.

[0025] The left-hand spiral downward groove section 212 and the right-hand spiral downward groove section 222 are respectively spiral along the circumferential direction of the guide column 2; compared with the left-hand spiral downward groove section 212 and the right-hand spiral downward groove section 222 being located at the same height and separated from each other, the left-hand spiral downward groove section 212 and the right-hand spiral downward groove section 222 as a whole undoubtedly need to occupy more width position on the side of the guide column 2, and the diameter of the guide column 2 needs to be made relatively large to meet the separation of the left-hand spiral downward groove section 212 and the right-hand spiral downward groove section 222. In particular, when there are two or more left-handed guide grooves 21 and right-handed guide grooves 22 respectively, the diameter of the guide column 2 needs to be made very large; the left-hand spiral downward groove section 212 of the present invention protrudes below the right-hand spiral downward groove section 222 along the circumferential direction of the guide column 2. Through this structural design, the left-hand spiral downward groove section 212 can be made into a plurality of grooves. The down-pressing groove section 212 and the right spiral down-pressing groove section 222 are separated and do not interfere with each other, and at the same time occupy less width position on the side of the guide column 2, and the diameter of the guide column 2 can be made smaller, so that the overall structural layout can be made more compact and small; of course, in other embodiments, the right spiral down-pressing groove section 222 can also be protruded below the left spiral down-pressing groove section 212 along the circumferential direction of the guide column 2 according to actual production needs, that is, the left spiral down-pressing groove section 212 and the right spiral down-pressing groove section 222 are arranged at intervals above and below in a manner that the left spiral down-pressing groove section 212 is on the top and the right spiral down-pressing groove section 222 is on the bottom; the left spiral down-pressing groove section 212 and the right spiral down-pressing groove section 222 of the present invention are designed as one left and one right and one high and one low, and viewed from another perspective, they are designed as one front and one back and one high and one low.

[0026] Since the height of the left spiral downward pressing groove section 212 is lower than the height of the right spiral downward pressing groove section 222, that is, when the guide pin 31 reaches the top of the left spiral downward pressing groove section 212, there is still a distance between the piston seat 32 and the top of the piston chamber 11, and the guide pin 31 will punch upward against the top of the left spiral downward pressing groove section 212 and easily cause damage to the left spiral downward pressing groove section 212; the present invention also includes a height limiting component 4 for preventing the guide pin 31 from sliding excessively upward in the left spiral downward pressing groove section 212, and the height limiting component 4 is used to make up for the height difference between the top of the left spiral downward pressing groove section 212 and the top of the right spiral downward pressing groove section 222, that is, when the guide pin 31 reaches the top of the left spiral downward pressing groove section 212, the height limiting component 4 prevents the guide pin 31 from continuing to punch upward against the top of the left spiral downward pressing groove section 212, thereby preventing the left spiral downward pressing groove section 212 from being damaged by the guide pin 31 and better ensuring the overall service life.

[0027] A piston cavity 11 is formed in the cylinder body 1, and the piston pressure block assembly 3 includes a piston seat 32 mounted on the guide column 2. The height limiting assembly 4 includes a fixed height limiting block 41 arranged at the top of the piston cavity 11 and a movable height limiting block 42 arranged at the top of the piston seat 32; when the guide pin 31 is located at the top of the right spiral downward pressure groove section 222, the fixed height limiting block 41 and the movable height limiting block 42 are staggered; when the guide pin 31 is located at the top of the left spiral downward pressure groove section 212, the bottom of the fixed height limiting block 41 is abutted against the top of the movable height limiting block 42; the piston seat 32 is limited by the abutment between the fixed height limiting block 41 and the movable height limiting block 42 to prevent the piston seat 32 from continuing to move upward, that is, to prevent the guide pin 31 from continuing to move upward, thereby preventing the guide pin 31 from hitting the top of the left spiral downward pressure groove section 212.

[0028] The height limiting assembly 4 of the present invention preferably includes a fixed outer ring height limiting block 43 arranged at the top of the piston cavity 11, a fixed inner ring height limiting block 44 arranged at the top of the piston cavity 11, a movable outer ring height limiting block 45 arranged at the top of the piston seat 32, and a movable inner ring height limiting block 46 arranged at the top of the piston seat 32. The fixed outer ring height limiting block 43 is arranged in a mirror-symmetrical manner with the fixed inner ring height limiting block 44 and is distributed in a concentric circle shape, and the movable outer ring height limiting block 45 is arranged in a mirror-symmetrical manner with the movable inner ring height limiting block 46; when the guide pin 31 is located at the top of the right spiral downward pressure groove section 222, the fixed outer ring height limiting block 43 and the movable outer ring height limiting block 45 are arranged in a mirror-symmetrical manner, and the fixed inner ring height limiting block 44 and the movable inner ring height limiting block 46 are arranged in a mirror-symmetrical manner ... When at the top of the left spiral downward pressure groove section 212, the bottom of the fixed outer ring height limiting block 43 is abutted against the top of the movable outer ring height limiting block 45, and the bottom of the fixed inner ring height limiting block 44 is abutted against the top of the movable inner ring height limiting block 46; compared with only limiting the height by abutting one side of the piston seat 32, the present invention cooperates with the fixed outer ring height limiting block 43, the fixed inner ring height limiting block 44, the movable outer ring height limiting block 45, and the movable inner ring height limiting block 46, which can not only cleverly achieve conditional height limiting, that is, when the guide pin 31 is at the top of the left spiral downward pressure groove section 212, the height limiting is performed, and when the guide pin 31 is at the top of the right spiral downward pressure groove section 222, the height limiting will not be performed, and when limiting the height, both sides of the piston seat 32 are subjected to force, the overall force is more uniform, and the height limiting can be achieved more smoothly.

[0029] A piston chamber 11 is formed in the cylinder body 1, and the piston chamber 11 includes a vertical downward pressure chamber 111 and a spiral downward pressure chamber 112 arranged at the top of the vertical downward pressure chamber 111. The left vertical downward pressure groove section 211 and the right vertical downward pressure groove section 221 are respectively located in the vertical downward pressure chamber 111, and the left spiral downward pressure groove section 212 and the right spiral downward pressure groove section 222 are respectively located in the spiral downward pressure chamber 112. The inner diameter of the spiral downward pressure chamber 112 is larger than the inner diameter of the vertical downward pressure chamber 111; compared with the existing traditional piston chamber 11, which has only a single inner diameter size, if the inner diameter size is too large, the contact between the sealing ring 33 on the piston seat 32 and the piston chamber 11 is not tight enough, and the downward pressure will be affected, that is, the downward pressure block 35 is easy to not clamp the workpiece to be clamped; if the inner diameter size is too small, the contact between the sealing ring 33 and the piston chamber 11 is tight, and the contact between the sealing ring 33 on the piston seat 32 and the piston chamber 11 is too tight, which is not conducive to the piston seat 32 realizes rotation; the present invention cleverly divides the piston chamber 11 into two parts, a spiral downward pressure chamber 112 with a larger inner diameter and a vertical downward pressure chamber 111 with a smaller inner diameter, so as to better fit the actual realization of the entire action of rotational downward pressure and vertical downward pressure. The spiral downward pressure chamber 112 with a larger inner diameter can reduce the friction between the sealing ring 33 on the piston seat 32 and the spiral downward pressure chamber 112, so as to realize rotational downward pressure more smoothly, and the vertical downward pressure chamber 111 with a smaller inner diameter can make the sealing ring 33 on the piston seat 32 and the vertical downward pressure chamber 111 more closely contact, so as to better ensure that there is a sufficiently large downward force, so as to better realize clamping, pressing, assembly, etc. The piston chamber 11 of the present invention adopts a segmented structural design, which can better meet the actual application, and can ensure both smooth rotational downward pressure and sufficiently large downward force.

[0030] Since the guide pin 31 can be switched between the left-hand guide groove 21 and the right-hand guide groove 22 by a slight push of the guide pin 31, it is very easy to cause misoperation, that is, mis-reversing. The reversing channel 23 of the present invention is provided with an anti-mis-reversing assembly 5, which includes a retractable block 51 that can be slid back and forth at the position of the reversing channel 23, and a compression spring 52 sandwiched between the retractable block 51 and the guide column 2; when the guide pin 31 is between the left-hand guide groove 21 and the right-hand guide groove 22, the guide pin 31 can be switched between the left-hand guide groove 21 and the right-hand guide groove 22. When switching, the guide pin 31 needs to squeeze one side of the retractable block 51 and make the retractable block 51 squeeze the compression spring 52 backward. As the retractable block 51 is squeezed backward, the guide pin 31 can smoothly pass through the reversing channel 23 and achieve reversal. That is, compared with the previous method of achieving reversal without using force, the present invention, after setting the anti-misoperation reversing component 5, requires a certain amount of force to achieve the guide pin 31 switching between the left-hand guide groove 21 and the right-hand guide groove 22, thereby better avoiding misoperation.

[0031] The piston pressing block assembly 3 includes a piston seat 32 sleeved on the guide column 2, a sealing ring 33 sleeved on the piston seat 32, a piston rod 34 arranged on the piston seat 32, a lower pressing block 35 arranged on the piston rod 34, and a guide pin 31 arranged on the piston seat 32; since the piston seat 32, the piston rod 34, the lower pressing block 35, and the guide pin 31 are connected as a whole, the movement trajectory of the guide pin 31 is the movement trajectory of the entire piston pressing block assembly 3, that is, whether it is the movement trajectory of the piston seat 32, the movement trajectory of the piston rod 34, or the movement trajectory of the lower pressing block 35 is consistent with the guide pin 31. When it is necessary to switch the guide pin 31 between the left-hand guide groove 21 and the right-hand guide groove 22, it is only necessary to switch the lower pressing block 35 or The piston rod 34 is moved accordingly, which can drive the guide pin 31 to switch synchronously. For example, when the guide pin 31 needs to be switched from the left-hand guide groove 21 to the right-hand guide groove 22, the piston seat 32 is first pressed down and the guide pin 31 is located on one side of the reversing channel 23. Then, the lower pressing block 35 is moved to the left, and the guide pin 31 passes through the reversing channel 23 as the lower pressing block 35 rotates to the left and is moved to the right-hand guide groove 22, completing the reversal. The cylinder body 1 is formed with a piston chamber 11, an upper drive port 12 connected to the top of the piston chamber 11, and a lower drive port 13 connected to the bottom of the piston chamber 11. The upper drive port 12 and the lower drive port 13 are respectively connected to an air pressure or hydraulic source to realize the telescopic movement of the piston rod 34.

[0032] Compared with only one left-handed guide groove 21 and one right-handed guide groove 22, the present invention has at least two left-handed guide grooves 21 and at least two right-handed guide grooves 22, and the left-handed guide grooves 21 are arranged in an array along the circumferential direction of the guide column 2, and the right-handed guide grooves 22 are arranged in an array along the circumferential direction of the guide column 2. The piston pressure block assembly 3 includes the same number of guide pins 31 as the left-handed guide grooves 21 or the right-handed guide grooves 22. The guide pins 31 are respectively and simultaneously located in the left-handed guide grooves 21 or the right-handed guide grooves 22, which can more smoothly realize the guided movement of the piston pressure block assembly 3, thereby better realizing the rotational downward pressure.

[0033] Working principle:

[0034] When it is necessary to rotate and press down to the left, the guide pin 31 is pushed into the left guide groove 21. As the piston pressure block assembly 3 is pushed up and pressed down, the guide pin 31 moves along the left guide groove 21, and accordingly, the piston pressure block assembly 3 is rotated and pressed to the left and rotated to rise and reset; when it is necessary to rotate and press down to the right, the guide pin 31 is pushed from the left guide groove 21 through the reversing channel 23 and pushed into the right guide groove 22. As the piston pressure block assembly 3 is pushed up and pressed down, the guide pin 31 moves along the right guide groove 22, and accordingly, the piston pressure block assembly 3 is rotated and pressed to the right and rotated to rise and reset to the left; compared with the existing rotary pressing cylinder that can only rotate and press in a single direction, the present invention can rotate and press in both the left and right directions, has strong adaptability, can flexibly switch the direction of rotary pressing according to specific application scenarios, does not require advance selection, is more conducive to equipment design, only needs to produce one model, can facilitate production and reduce inventory pressure.

[0035] Among them, the above-mentioned up and down, left and right, top and bottom are respectively consistent with the up and down, left and right, top and bottom in the drawings of the specification, and the above-mentioned left rotation and right rotation are respectively determined by the top-down angle of looking from top to bottom in the drawings of the specification, that is, clockwise direction from the top-down angle is right rotation, and counterclockwise direction from the top-down angle is left rotation.

[0036] Of course, the above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A bidirectionally rotatable rotary pressing cylinder, comprising a cylinder body (1), a guide column (2) disposed in the cylinder body (1), and a piston pressing block assembly (3), characterized in that: The guide column (2) is formed with a left-handed guide groove (21) and a right-handed guide groove (22); the piston pressing block assembly (3) includes a guide pin (31) for cooperating with the left-handed guide groove (21) or the right-handed guide groove (22); the guide column (2) is also formed with a reversing channel (23) for the guide pin (31) to switch between the left-handed guide groove (21) and the right-handed guide groove (22); when the guide pin (31) is located in the left-handed guide groove (21), the guide column (2) guides the piston pressing block assembly (3) to rotate and press to the left; when the guide pin (31) is located in the right-handed guide groove (22), the guide column (2) guides the piston pressing block assembly (3) to rotate and press to the right.

2. The bidirectionally rotatable rotary pressing cylinder according to claim 1, characterized in that: The left-handed guide groove (21) includes a left vertical downward pressing groove section (211) in the shape of a vertical strip groove and a left spiral downward pressing groove section (212) in the shape of a spiral groove. The top of the left vertical downward pressing groove section (211) is connected to the bottom of the left spiral downward pressing groove section (212). When the guide pin (31) is located in the left vertical downward pressing groove section (211), the guide column (2) guides the piston pressing block assembly (3) to move vertically downward. When the guide pin (31) is located in the left spiral downward pressing groove section (212), the guide column (2) guides the piston pressing block assembly (3) to move leftward spirally downward. The right-handed guide groove (22) comprises a right vertical downward pressing groove section (221) in the shape of a vertical strip groove and a right spiral downward pressing groove section (222) in the shape of a spiral groove. The top of the right vertical downward pressing groove section (221) is connected to the bottom of the right spiral downward pressing groove section (222). When the guide pin (31) is located in the right vertical downward pressing groove section (221), the guide column (2) guides the piston pressing block assembly (3) to move vertically downward. When the guide pin (31) is located in the right spiral downward pressing groove section (222), the guide column (2) guides the piston pressing block assembly (3) to move rightward spirally downward.

3. The bidirectionally rotatable rotary pressing cylinder according to claim 2, characterized in that: The left spiral downward pressure groove section (212) and the right spiral downward pressure groove section (222) are respectively spiral along the circumferential direction of the guide column (2).

4. The bidirectionally rotatable rotary pressing cylinder according to claim 3, characterized in that: The left spiral downward pressure groove section (212) protrudes below the right spiral downward pressure groove section (222) along the circumferential direction of the guide column (2).

5. The bidirectionally rotatable rotary pressing cylinder according to claim 4, characterized in that: It also includes a height limiting component (4) for preventing the guide pin (31) from excessively sliding upward in the left spiral downward pressure groove section (212).

6. The bidirectionally rotatable rotary pressing cylinder according to claim 5, characterized in that: A piston cavity (11) is formed in the cylinder body (1), the piston pressure block assembly (3) includes a piston seat (32) sleeved on the guide column (2), and the height limiting assembly (4) includes a fixed height limiting block (41) arranged at the top of the piston cavity (11) and a movable height limiting block (42) arranged at the top of the piston seat (32); when the guide pin (31) is located at the top of the right spiral downward pressure groove section (222), the fixed height limiting block (41) and the movable height limiting block (42) are staggered; when the guide pin (31) is located at the top of the left spiral downward pressure groove section (212), the bottom of the fixed height limiting block (41) and the top of the movable height limiting block (42) are abutted.

7. The bidirectionally rotatable rotary pressing cylinder according to claim 5, characterized in that: A piston cavity (11) is formed in the cylinder body (1), the piston pressure block assembly (3) includes a piston seat (32) sleeved on the guide column (2), and the height limiting assembly (4) includes a fixed outer ring height limiting block (43) arranged at the top of the piston cavity (11), a fixed inner ring height limiting block (44) arranged at the top of the piston cavity (11), a movable outer ring height limiting block (45) arranged at the top of the piston seat (32), and a movable inner ring height limiting block (46) arranged at the top of the piston seat (32). The fixed outer ring height limiting block (43) is mirror-symmetrically arranged concentrically with the fixed inner ring height limiting block (44), and the movable outer ring height limiting block (45) is arranged in a concentric circle. The mirror-symmetrical and concentrically distributed movable inner ring height limiting blocks (46) are arranged; when the guide pin (31) is located at the top of the right spiral downward pressure groove section (222), the fixed outer ring height limiting blocks (43) and the movable outer ring height limiting blocks (45) are arranged in a mirror-symmetrical manner, and the fixed inner ring height limiting blocks (44) and the movable inner ring height limiting blocks (46) are arranged in a mirror-symmetrical manner; when the guide pin (31) is located at the top of the left spiral downward pressure groove section (212), the bottom of the fixed outer ring height limiting blocks (43) and the top of the movable outer ring height limiting blocks (45) are counteracted, and the bottom of the fixed inner ring height limiting blocks (44) and the top of the movable inner ring height limiting blocks (46) are counteracted.

8. The bidirectionally rotatable rotary pressing cylinder according to any one of claims 2 to 7, characterized in that: A piston chamber (11) is formed in the cylinder body (1), and the piston chamber (11) includes a vertical downward pressure chamber (111) and a spiral downward pressure chamber (112) arranged at the top of the vertical downward pressure chamber (111). The left vertical downward pressure groove section (211) and the right vertical downward pressure groove section (221) are respectively located in the vertical downward pressure chamber (111), and the left spiral downward pressure groove section (212) and the right spiral downward pressure groove section (222) are respectively located in the spiral downward pressure chamber (112). The inner diameter of the spiral downward pressure chamber (112) is larger than the inner diameter of the vertical downward pressure chamber (111).

9. The bidirectionally rotatable rotary pressing cylinder according to claim 1, characterized in that: The reversing channel (23) is provided with an anti-misdirection reversing assembly (5), which comprises a retractable block (51) slidably arranged at the position of the reversing channel (23), and a compression spring (52) sandwiched between the retractable block (51) and the guide column (2).

10. The bidirectionally rotatable rotary pressing cylinder according to claim 1, characterized in that: There are at least two left-handed guide grooves (21) and right-handed guide grooves (22), respectively. The left-handed guide grooves (21) are arranged in an array along the circumferential direction of the guide column (2), and the right-handed guide grooves (22) are arranged in an array along the circumferential direction of the guide column (2). The piston pressure block assembly (3) includes the same number of guide pins (31) as the number of the left-handed guide grooves (21) or the right-handed guide grooves (22). Each guide pin (31) is simultaneously located in each left-handed guide groove (21) or simultaneously located in each right-handed guide groove (22).

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