Helical pressure mechanism and helical pressure device

Abstract

This invention provides a helical pressure mechanism and a helical pressure device. The helical pressure mechanism includes: a primary screw, a push rod, and a power mechanism. The primary screw has a primary screw hole. The push rod is threaded into the primary screw hole. The power mechanism includes a flywheel and a clutch. The clutch can selectively connect to either the primary screw or the push rod. When the clutch is connected to the primary screw, the rotational force of the flywheel is transmitted to the primary screw. The threaded engagement force between the primary screw and the push rod causes the push rod to move in the direction of pressure application. When the clutch is connected to the push rod, the rotational force of the flywheel is transmitted to the push rod. The threaded engagement force between the push rod and the primary screw causes the push rod to move in the opposite direction of pressure application. During the reciprocating movement of the push rod to achieve the stamping operation, the flywheel maintains rotation in the same direction, thus allowing the small-power motor to continuously store energy and achieve high-power output.

Description

Technical Field

[0001] This invention relates to the technical field of stamping equipment, and more specifically, to a spiral pressure mechanism and spiral pressure device. Background Technology

[0002] The screw pressure device is a new type of pressure equipment, mainly used for forging and stamping. This type of equipment uses the forward and reverse rotation of the motor to drive the screw to rotate. The screw converts its rotational motion into linear motion through the screw structure, realizing stamping and return.

[0003] However, each time the motor changes direction, it requires the high-momentum device such as the flywheel to brake, decelerate, and stop, and then start in the opposite direction and accelerate. The repeated turning of the motor results in high energy consumption, large wear on parts, long processing time, slow processing cycle, and low resource utilization efficiency of the screw pressure device. Summary of the Invention

[0004] The purpose of this invention is to provide a spiral pressure mechanism and spiral pressure device to solve the technical problems existing in the prior art, such as high energy consumption, large wear of parts, long processing time, slow processing cycle and low resource utilization efficiency caused by the repeated rotation of the motor in spiral pressure devices.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, a helical pressure mechanism is provided, comprising:

[0007] First-stage screw, push rod, power mechanism;

[0008] The primary screw has a primary screw hole extending in the pressure direction; the push rod is inserted into the primary screw hole and threadedly engaged with it; the power mechanism includes a flywheel and a clutch mounted on the flywheel, the clutch being selectively connected to either the primary screw or the push rod. When the clutch is connected to the primary screw, the rotational force of the flywheel is transmitted to the primary screw, and the threaded engagement force between the primary screw and the push rod causes the push rod to move in the pressure direction. When the clutch is connected to the push rod, the rotational force of the flywheel is transmitted to the push rod, and the threaded engagement force between the push rod and the primary screw causes the push rod to move in the opposite direction to the pressure direction.

[0009] By adopting the above technical solution, this embodiment has the following advantages:

[0010] 1. When the push rod reciprocates to achieve the stamping operation, the flywheel can continuously rotate in the same direction, which allows the small-power motor to continuously store energy and also achieve high-power output of the push rod;

[0011] 2. Controlling the clutch engagement and disengagement time allows the push rod to be processed at any stroke, increasing the processing frequency.

[0012] 3. This embodiment can realize multi-stage screw matching (not limited to three stages, but can be four stages, five stages, etc.), reduce axial space occupation, reduce idle stroke time waste, and increase the output of the working stroke.

[0013] In one embodiment, the clutch is movable along the axial direction of the flywheel to selectively engage with either the primary screw or the push rod.

[0014] In one embodiment, the helical pressure mechanism further includes a secondary screw, a first limiter, and a first brake.

[0015] The primary screw has a primary screw hole extending in the pressure direction, and the hole wall of the primary screw hole has a first thread; the secondary screw is inserted into the primary screw hole, and the outer peripheral sidewall of the secondary screw has a second thread that meshes with the first thread; the secondary screw has a secondary screw hole extending in the pressure direction, and the hole wall of the secondary screw hole has a third thread; the push rod is inserted into the secondary screw hole, and the outer peripheral sidewall of the push rod has a fourth thread that meshes with the third thread; the first limiter is used to limit the movement of the push rod in the pressure direction, and the first brake is used to brake the movement of the secondary screw in the pressure direction; the first brake is located at the end of the primary screw in the pressure direction.

[0016] When the first brake is not braking the secondary screw, the primary screw rotates relative to the secondary screw, causing the first thread to engage with the second thread to drive the secondary screw and the push rod to move synchronously along the pressure direction; when the first brake is braking the secondary screw, the primary screw and the secondary screw rotate synchronously, causing the third thread to engage with the fourth thread to drive the push rod to move along the pressure direction; wherein, the thread pitch between the first thread and the second thread is greater than the thread pitch between the third thread and the fourth thread.

[0017] By adopting the above technical solution, the spiral pressure mechanism moves quickly during the idle stroke, which improves the pressure application efficiency. At the same time, it applies a large pressure ratio during the pressure application stroke, which ensures the pressure application effect. Therefore, the spiral pressure mechanism in this embodiment takes into account both the pressure application efficiency and the pressure ratio.

[0018] In one embodiment, the first braking member has a first braking protrusion that can abut against the secondary screw to brake the movement of the secondary screw in the direction of pressure application, and the first braking protrusion surrounds a first braking hole for the push rod to extend out.

[0019] By adopting the above technical solution, the secondary screw can maintain the continued movement of the push rod after restricted movement.

[0020] In one embodiment, the helical pressure mechanism further includes a second braking element, which is a second braking protrusion formed on the outer peripheral sidewall of the push rod. The second braking protrusion is located at the end of the fourth thread in the pressure direction, and the second braking protrusion can abut against the secondary screw to drive the push rod to move synchronously in the pressure direction.

[0021] By adopting the above technical solution, the possibility of relative rotation between the secondary screw and the ejector rod during the idle stroke is reduced, ensuring the efficiency of the secondary screw synchronously driving the ejector rod to move along the pressure direction during the idle stroke.

[0022] In a second aspect, a spiral pressure device is provided, comprising a housing, a power mechanism, and the aforementioned spiral pressure mechanism;

[0023] The outer casing is provided with a housing and a power port and a stamping port communicating with the housing;

[0024] The power mechanism includes a power component mounted on the outer casing, a power output shaft mounted on the power component and extending into the engine compartment, and a flywheel connected to the power output shaft and located inside the engine compartment.

[0025] The spiral pressure mechanism is housed within the machine compartment. The flywheel can be connected to the primary screw, enabling the flywheel to drive the primary screw to rotate, thereby causing the push rod to extend out of the stamping hole.

[0026] By adopting the above technical solution, in addition to the advantages of the aforementioned spiral pressure mechanism, the spiral pressure device of this embodiment also has the advantages of fast pressure application efficiency and large pressure ratio.

[0027] In one embodiment, the flywheel is further provided with a clutch, which is movable along the pressure application direction and the return direction opposite to the pressure application direction, so that the flywheel and the first-stage screw are engaged or disengaged. When the clutch moves along the pressure application direction and engages with the first-stage screw, the rotational power of the flywheel is transmitted to the first-stage screw, thereby driving the push rod to move along the pressure application direction. When the clutch moves along the return direction and disengages from the first-stage screw, the clutch cuts off the power transmission between the flywheel and the first-stage screw.

[0028] By adopting the above technical solution, the power mechanism and the screw pressure mechanism are connected in a clutch manner, which facilitates the connection and disconnection of the power transmission of the power mechanism, thus enabling the screw pressure mechanism to switch motion states.

[0029] In one embodiment, the first limiter is detachably connected to the push rod. When the clutch moves in the pressure direction and engages with the primary screw, the first limiter limits the movement of the push rod in the pressure direction; when the clutch moves in the return direction and disengages from the primary screw, the first limiter disengages from the push rod.

[0030] By adopting the above technical solution, the first limiter can be detachably connected to the push rod, that is, the push rod can move along the pressure direction to apply pressure under the drive of the secondary screw or rotate relative to the secondary screw to return to its original position in different states of the first limiter.

[0031] In one embodiment, the push rod is further provided with a sliding sleeve for driving the push rod to rotate. The clutch can move along the return direction and the pressure direction, so that the flywheel and the sliding sleeve are engaged or disengaged. When the clutch moves along the return direction and engages with the sliding sleeve, the rotational power of the flywheel is transmitted to the sliding sleeve, and the sliding sleeve can drive the push rod to rotate relative to the secondary screw, thereby driving the push rod to move along the return direction. When the clutch moves along the pressure direction and disengages from the sliding sleeve, the power transmission between the flywheel and the sliding sleeve is cut off.

[0032] By adopting the above technical solution, the rotation direction of the power component is consistent during the idle stroke, pressure stroke and first return stroke, which reduces energy consumption, part wear and processing time, and improves processing cycle time and resource utilization efficiency.

[0033] In one embodiment, the helical pressure mechanism further includes a third braking element located at the end of the primary screw in the return direction. The third braking element has a third braking protrusion that can abut against the secondary screw to brake the secondary screw to move in the return direction. The third braking protrusion surrounds and forms a third braking hole for the push rod to extend out.

[0034] By adopting the above technical solution, the switching between the return stroke and the idle stroke of the push rod is ensured to be smooth. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of the spiral pressure mechanism provided in an embodiment of the present invention;

[0037] Figure 2 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 1 ;

[0038] Figure 3 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 2 ;

[0039] Figure 4 This is a three-dimensional structural diagram of the primary screw provided in an embodiment of the present invention;

[0040] Figure 5 This is a three-dimensional structural diagram of the two-stage screw provided in an embodiment of the present invention;

[0041] Figure 6 This is a three-dimensional structural diagram of the top rod provided in an embodiment of the present invention;

[0042] Figure 7 This is a three-dimensional structural diagram of the first limiter provided in an embodiment of the present invention;

[0043] Figure 8 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 3 ;

[0044] Figure 9 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 4 ;

[0045] Figure 10 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 5 ;

[0046] Figure 11 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 6 ;

[0047] Figure 12 This is a cross-sectional view of the helical pressure mechanism provided in an embodiment of the present invention. Figure 7 ;

[0048] Figure 13 This is a three-dimensional structural diagram of the second limiter provided in an embodiment of the present invention.

[0049] The labels for the attached figures are as follows:

[0050] 10. Screw pressure mechanism; 20. Power mechanism; 30. Housing;

[0051] 1. Primary screw; 2. Secondary screw; 3. Push rod; 4. First limiter; 5. First brake; 6. Second brake; 7. Power component; 8. Second limiter; 9. Third brake;

[0052] 11. Primary threaded hole; 12. First thread; 13. Second limiting groove; 21. Second thread; 22. Secondary threaded hole; 23. Third thread; 31. Fourth thread; 32. First limiting groove; 33. Sliding sleeve; 41. First limiting seat; 42. First limiting block; 43. First limiting tooth; 51. First brake protrusion; 52. First brake hole; 61. Second brake protrusion; 71. Power output shaft; 72. Flywheel; 73. Clutch; 81. Second limiting seat; 82. Second limiting block; 83. Second limiting tooth;

[0053] 301. Engine compartment; 302. Power port; 303. Stamping port. Detailed Implementation

[0054] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0055] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0056] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments:

[0058] like Figures 1 to 3 As shown, an embodiment of the present invention provides a helical pressure mechanism 10, which is used to apply pressure to a workpiece under the drive of a power mechanism 20. Specifically, the helical pressure mechanism 10 drives the push rod 3 to move through a helical structure, so that the push rod 3 has a punching potential energy, which is finally applied to the workpiece. The helical pressure mechanism 10 of this embodiment has the advantages of a large pressure ratio and high punching efficiency. The following is a description through specific embodiments:

[0059] The spiral pressure mechanism 10 in this embodiment includes: a primary screw 1, a push rod 3, and a power mechanism 20;

[0060] The primary screw 1 has a primary screw hole 11 extending in the pressure direction; the push rod 3 is inserted into the primary screw hole 11 and threadedly engaged with the primary screw hole 11; the power mechanism 20 includes a flywheel 72 and a clutch 73 disposed on the flywheel 72. The clutch 73 can selectively connect to the primary screw 1 or the push rod 3. Optionally, the clutch 73 can move along the axial direction of the flywheel 72 to selectively connect to the primary screw 1 or the push rod 3. When the clutch 73 is connected to the primary screw 1, the rotational force of the flywheel 72 is transmitted to the primary screw 1. The threaded engagement force between the primary screw 1 and the push rod 3 causes the push rod 3 to move in the pressure direction. When the clutch 73 is connected to the push rod 3, the rotational force of the flywheel 72 is transmitted to the push rod 3. The threaded engagement force between the push rod 3 and the primary screw 1 causes the push rod 3 to move in the opposite direction to the pressure direction.

[0061] By adopting the above technical solution, this embodiment has the following advantages:

[0062] 1. When the push rod reciprocates to achieve the stamping operation, the flywheel can continuously rotate in the same direction, which allows the small-power motor to continuously store energy and also achieve high-power output of the push rod;

[0063] 2. Controlling the clutch engagement and disengagement time allows the push rod to be processed at any stroke, increasing the processing frequency.

[0064] 3. This embodiment can realize multi-stage screw matching (not limited to three stages, but can be four stages, five stages, etc.), reduce axial space occupation, reduce idle stroke time waste, and increase the output of the working stroke.

[0065] In one embodiment, the spiral pressure mechanism 10 of this embodiment further includes: a secondary screw 2, a first limiter 4, and a first brake 5;

[0066] Please refer to the following: Figure 4 The primary screw 1 has a primary screw hole 11 extending in the pressure direction X, and the wall of the primary screw hole 11 has a first thread 12. Here, the primary screw 1 is used to connect with the power mechanism 20, which can transmit power to the primary screw 1, so that the primary screw 1 rotates around the axis. The primary screw 1 has a primary screw hole 11, which is used to receive the secondary screw 2. At the same time, the wall of the primary screw hole 11 has a first thread 12, which is used to cooperate with the second thread 21 on the secondary screw 2, so that the secondary screw 2 can move relative to the primary screw 1 under the cooperation of the second thread 21 and the first thread 12.

[0067] Please refer to the following: Figure 5The secondary screw 2 is inserted into the primary screw hole 11. The outer peripheral wall of the secondary screw 2 has a second thread 21 that meshes with the first thread 12. The secondary screw 2 has a secondary screw hole 22 extending in the pressure direction X, and the wall of the secondary screw hole 22 has a third thread 23. Here, the secondary screw 2 is used to move along the pressure direction X under the drive of the primary screw 1. Specifically, the secondary screw 2 is inserted into the primary screw hole 11 to achieve threaded engagement with the primary screw 1. The outer peripheral wall of the secondary screw 2 has a second thread 21, which meshes with the first thread 12. The first thread 12 and... The extension direction of the second thread 21 is parallel to the pressure direction X. Thus, when the primary screw 1 rotates around its axis under the drive of the power mechanism 20, and the secondary screw 2 is restricted to moving only along the pressure direction X, the engagement of the first thread 12 and the second thread 21 allows the secondary screw 2 to move relative to the primary screw 1 along the pressure direction X. The secondary screw 2 has a secondary threaded hole 22, and the hole wall of the secondary threaded hole 22 is formed with a third thread 23, which is used to engage with the fourth thread 31 on the push rod 3, so that the push rod 3 can move relative to the secondary screw 2 under the engagement of the third thread 23 and the fourth thread 31.

[0068] Please refer to the following: Figure 6 The push rod 3 is inserted into the secondary screw hole 22, and the outer peripheral sidewall of the push rod 3 is provided with a fourth thread 31 that meshes with the third thread 23. Here, the push rod 3 is used to abut against the workpiece and apply pressure along the pressure direction X. Specifically, the push rod 3 is inserted into the secondary screw hole 22 to achieve threaded engagement with the secondary screw 2. Specifically, the outer peripheral sidewall of the push rod 3 is provided with a fourth thread 31, which is used to mesh with the third thread 23. The extension directions of the third thread 23 and the fourth thread 31 are parallel to the pressure direction X. In this way, when the secondary screw 2 rotates around the axis under the drive of the primary screw 1, and the push rod 3 is restricted to moving only along the pressure direction X, the engagement of the third thread 23 and the fourth thread 31 allows the push rod 3 to move relative to the secondary screw 2 along the pressure direction X. It should be further explained that the front end of the push rod 3 in the pressure direction X can be used to abut against the workpiece, or a punch head can be provided at the front end to adapt to different workpieces.

[0069] Please refer to the following: Figure 7 The first limiter 4 is used to limit the movement of the push rod 3 along the pressure direction X; here, the first limiter 4 includes, but is not limited to, a chuck structure, that is, the first limiter 4 can hold the push rod 3 so that the push rod 3 can only move in the pressure direction X and cannot rotate around the axis. In this embodiment, the pressure direction X is the axial direction of the push rod 3.

[0070] The first braking element 5 is used to brake the movement of the secondary screw 2 along the pressure direction X. The first braking element 5 is located at the end of the primary screw 1 in the pressure direction X. Here, the first braking element 5 is used to abut against the secondary screw 2 to limit the secondary screw 2 from continuing to move along the pressure direction X.

[0071] When the first brake 5 does not brake the secondary screw 2, the primary screw 1 rotates relative to the secondary screw 2, causing the first thread 12 to engage with the second thread 21 to drive the secondary screw 2 and the push rod 3 to move synchronously along the pressure direction X; when the first brake 5 brakes the secondary screw 2, the primary screw 1 and the secondary screw 2 rotate synchronously, causing the third thread 23 to engage with the fourth thread 31 to drive the push rod 3 to move along the pressure direction X; wherein, the thread pitch of the first thread 12 and the second thread 21 is greater than the thread pitch of the third thread 23 and the fourth thread 31.

[0072] The working principle of the spiral pressure mechanism 10 provided in this embodiment is as follows:

[0073] The operation of the screw pressure mechanism 10 includes a no-load stroke and a pressure application stroke;

[0074] Among them, such as Figure 1 As shown, the idle stroke is between the initial position of the secondary screw 2 and the push rod 3 in the pressure direction X and the position where the secondary screw 2 abuts against the first brake 5. During this period, the power mechanism 20 drives the primary screw 1 to rotate around the axis. The force generated by the cooperation of the first thread 12 and the second thread 21 causes the secondary screw 2 to move along the pressure direction X. Since the thread pitch of the first thread 12 and the second thread 21 is large, the secondary screw 2 and the push rod 3 move at a fast speed and have a small moment of inertia. It needs to be further explained that since the thread pitch of the third thread 23 and the fourth thread 31 is smaller than the thread pitch of the first thread 12 and the second thread 21, before the secondary screw 2 moves to the first brake 5, the secondary thread drives the push rod 3 to move together along the pressure direction X under the limitation of the first limiter 4.

[0075] Among them, such as Figure 8 and Figure 9 As shown, the pressure application stroke is from the position where the push rod 3 abuts against the secondary screw 2 and the first brake 5 to the position where the push rod 3 abuts against the workpiece. During this period, the power mechanism 20 drives the primary screw 1 to rotate. Since the secondary screw 2 abuts against the first brake 5, the secondary screw 2 cannot continue to move in the pressure application direction X. Therefore, the secondary screw 2 can only rotate around the axis under the drive of the primary screw 1. Thus, the force generated by the cooperation of the third thread 23 and the fourth thread 31 causes the push rod 3 to continue to move along the pressure application direction X. Since the thread pitch of the third thread 23 and the fourth thread 31 is large, the push rod 3 moves slowly, but the moment of inertia is large, and the applied pressure ratio is large.

[0076] By adopting the above technical solution, the spiral pressure mechanism 10 moves quickly during the idle stroke, which improves the pressure application efficiency. At the same time, it applies a large pressure ratio during the pressure application stroke, which ensures the pressure application effect. Therefore, the spiral pressure mechanism 10 in this embodiment takes into account both the pressure application efficiency and the pressure ratio.

[0077] In one embodiment, please refer again Figure 8 The first braking element 5 has a first braking protrusion 51, which can abut against the secondary screw 2 to brake the secondary screw 2 in the pressure direction X. The first braking protrusion 51 surrounds and forms a first braking hole 52 for the top rod 3 to extend out.

[0078] Here, the first braking protrusion 51 protrudes radially toward the center of the primary screw hole 11, and its protrusion length is approximately equal to the thickness of the secondary screw 2, so that the first braking protrusion 51 can just block the secondary screw 2 from continuing to move in the pressure direction X; in addition, since the push rod 3 is inserted into the secondary screw 2, in order for the push rod 3 to continue to move in the pressure direction X when the secondary screw 2 is blocked by the first braking protrusion 51, the first braking protrusion 51 surrounds and forms a first braking hole 52, so that the push rod 3 can extend out of the first braking hole 52 to continue to move in the pressure direction X.

[0079] Optionally, the first braking element 5 can be an adjustable moving ring sleeve, that is, the position of the first braking element 5 on the first-stage screw 1 is adjustable, thereby changing the distance of the idle stroke.

[0080] By adopting the above technical solution, the secondary screw 2 can maintain the continued movement of the push rod 3 after restricted movement.

[0081] In one embodiment, the spiral pressure mechanism 10 further includes a second braking element 6, which is a second braking protrusion 61 formed on the outer peripheral sidewall of the push rod 3. The second braking protrusion 61 is located at the end of the fourth thread 31 in the pressure direction X. The second braking protrusion 61 can abut against the secondary screw 2 so that the secondary screw 2 drives the push rod 3 to move synchronously along the pressure direction X.

[0082] Here, during the idle stroke, the secondary screw 2 and the push rod 3 are kept relatively fixed by the thread force between the third thread 23 and the fourth thread 31. That is, the secondary screw 2 and the push rod 3 move synchronously in the pressure direction X during the idle stroke. However, this situation can only be achieved when the difference in thread pitch between the first thread 12 and the second thread 21 and the third thread 23 and the fourth thread 31 is large. Therefore, in actual use, the secondary screw 2 and the push rod 3 may rotate relative to each other during the idle stroke. In order to ensure that the secondary screw 2 can drive the push rod 3 to move synchronously during the idle stroke, a second braking protrusion 61 is formed on the outer peripheral side wall of the die. When the secondary screw 2 rotates relative to the push rod 3 and abuts against the second braking protrusion 61, the secondary screw 2 stops rotating relative to the push rod 3, and at the same time drives the push rod 3 to move synchronously along the pressure direction X under the thread force of the primary screw 1.

[0083] By adopting the above technical solution, the possibility of relative rotation between the secondary screw 2 and the push rod 3 during the idle stroke is reduced, ensuring the efficiency of the secondary screw 2 in synchronously driving the push rod 3 to move along the pressure direction X during the idle stroke.

[0084] Secondly, please refer to the following: Figures 1 to 3 A spiral pressure device is provided, comprising a housing 30, a power mechanism 20, and the aforementioned spiral pressure mechanism 10;

[0085] The outer casing 30 is provided with a housing 301 and a power hole 302 and a stamping hole 303 communicating with the housing 301; here, the outer casing 30 is used to fix the power mechanism 20 and to house the screw pressure mechanism 10; specifically, the housing 301 is formed inside the outer casing 30, and the power hole 302 and the stamping hole 303 are formed at both ends of the outer casing 30, optionally, the power hole 302 and the stamping hole 303 are located at opposite ends of the outer casing 30;

[0086] The power mechanism 20 includes a power component 7 mounted on the housing 30, a power output shaft 71 mounted on the power component 7 and extending into the housing 301, and a flywheel 72 connected to the power output shaft 71 and located inside the housing 301. Here, the power mechanism 20 is used to provide rotational power to the primary screw 1 or the push rod 3. The power mechanism 20 includes the power component 7, the power output shaft 71, and the flywheel 72. The power component 7 includes, but is not limited to, a motor. The power output shaft 71 is used to output power to the power component 7, and the flywheel 72 is used to connect the power output shaft 71 and the primary screw 1 or the push rod 3.

[0087] The spiral pressure mechanism 10 is housed in the machine compartment 301. The flywheel 72 can be connected to the first-stage screw 1, so that the flywheel 72 can drive the first-stage screw 1 to rotate, thereby driving the push rod 3 to extend out of the stamping hole 303.

[0088] The working principle of the spiral pressure device provided in this embodiment is as follows:

[0089] The power output shaft 71 of the power component 7 drives the flywheel 72 to rotate, and the flywheel 72 drives the first-stage screw 1 to rotate, which in turn drives the push rod 3 to move. The push rod 3 moves along the pressure direction X under the limitation of the first limiter 4.

[0090] By adopting the above technical solution, in addition to the advantages of the spiral pressure mechanism 10, the spiral pressure device of this embodiment also has the advantages of fast pressure application efficiency and large pressure ratio.

[0091] In one embodiment, please refer to [the relevant documentation / reference]. Figure 9 and Figure 10The flywheel 72 is also equipped with a clutch 73. The clutch 73 can move along the pressure direction X and the return direction Y opposite to the pressure direction X, so that the flywheel 72 and the first-stage screw 1 are engaged or disengaged. When the clutch 73 moves along the pressure direction X and engages with the first-stage screw 1, the rotational power of the flywheel 72 is transmitted to the first-stage screw 1, thereby driving the push rod 3 to move along the pressure direction X. When the clutch 73 moves along the return direction Y and disengages from the first-stage screw 1, the clutch 73 cuts off the power transmission between the flywheel 72 and the first-stage screw 1.

[0092] Here, clutch 73 is used to engage or disengage flywheel 72 and primary screw 1. Clutch 73 includes, but is not limited to, electromagnetically driven clutch 73. Clutch 73 can move on flywheel 72 in an electromagnetically driven manner to engage or disengage from primary screw 1. Specifically, clutch 73 can move along the pressure direction X until it engages with primary screw 1. At this time, clutch 73 and primary screw 1 are in contact through a key and keyway, so that the rotational power of flywheel 72 can be transmitted to primary screw 1 through clutch 73, that is, at this time flywheel 72 drives primary screw 1 to rotate. When clutch 73 moves along the return direction Y and disengages from primary screw 1, clutch 73 switches the power transmission between flywheel 72 and primary screw 1, at which time primary screw 1 stops rotating.

[0093] By adopting the above technical solution, the power mechanism 20 and the screw pressure mechanism 10 are connected in a clutch manner, which facilitates the connection and disconnection of the power transmission of the power mechanism 20, thus making it easier for the screw pressure mechanism 10 to switch motion states.

[0094] In one embodiment, please refer to [the relevant documentation / reference]. Figure 6 and Figure 7 The first limiter 4 is detachably connected to the push rod 3. When the clutch 73 moves along the pressure direction X and engages with the first-stage screw 1, the first limiter 4 limits the push rod 3 to move along the pressure direction X. When the clutch 73 moves along the return direction Y and disengages from the first-stage screw 1, the first limiter 4 disengages from the push rod 3.

[0095] Here, the first limiter 4 is used to limit the direction of movement of the push rod 3;

[0096] Specifically, the first limiter 4 includes a first limit seat 41, a first limit block 42 disposed on the first limit seat 41, and a first limit tooth 43 disposed on the first limit block 42. The outer peripheral side wall of the part of the push rod 3 that cooperates with the first limiter 4 is provided with a first limit groove 32. The length direction of the first limit groove 32 is parallel to the pressure direction X. In this way, when the first limit tooth 43 slides with the first limit groove 32, the first limit tooth 43 limits the push rod 3 to move only along the pressure direction X.

[0097] The first limiter 4 also includes a first limiter drive member connected to the first limiter block 42 and used to drive the first limiter tooth 43 to separate from or engage with the first limiter groove 32;

[0098] When the first limiting drive causes the first limiting tooth 43 to engage with the first limiting groove 32, the first limiter 4 limits the movement of the push rod 3 along the pressure direction X.

[0099] When the first limiting drive causes the first limiting tooth 43 to separate from the first limiting groove 32, the first limiter 4 no longer limits the push rod 3, that is, the push rod 3 rotates relative to the secondary screw 2. Thus, when the secondary screw 2 is fixed and the push rod 3 rotates relative to the secondary screw 2, the push rod 3 returns to its original position under the thread force generated by the cooperation of the third thread 23 and the fourth thread 31. That is, the push rod 3 moves along the return direction Y and returns to the front end in the pressure direction X.

[0100] By adopting the above technical solution, the first limiter 4 can be detachably connected to the push rod 3, that is, the push rod 3 can move along the pressure direction X under the drive of the secondary screw 2 to apply pressure or rotate relative to the secondary screw 2 to return to its original position in different states of the first limiter 4.

[0101] In one embodiment, such as Figure 11 and Figure 12 As shown, the push rod 3 is also provided with a sliding sleeve 33 for driving the push rod 3 to rotate. The clutch 73 can move along the return direction Y and the pressure direction X, so that the flywheel 72 and the sliding sleeve 33 are engaged or disengaged. When the clutch 73 moves along the return direction Y and engages with the sliding sleeve 33, the rotational power of the flywheel 72 is transmitted to the sliding sleeve 33. The sliding sleeve 33 can drive the push rod 3 to rotate relative to the secondary screw 2, thereby driving the push rod 3 to move along the return direction Y. When the clutch 73 moves along the pressure direction X and disengages from the sliding sleeve 33, the power transmission between the flywheel 72 and the sliding sleeve 33 is cut off.

[0102] Here, the sliding sleeve 33 and the push rod 3 are connected by a key and keyway, meaning that the sliding sleeve 33 and the push rod 3 can only rotate synchronously and can only move relative to each other in the pressure direction X or the return direction Y. When the clutch 73 moves along the return direction Y and engages with the sliding sleeve 33, it cuts off the power transmission between the flywheel 72 and the first-stage screw 1. At this time, the first-stage screw 1 stops rotating, while the clutch 73 engages the flywheel 72 and the sliding sleeve 33, so that the rotational power of the flywheel 72 is transmitted to the sliding sleeve 33. In this way, the flywheel 72 drives the sliding sleeve 33. When the sliding sleeve 33 rotates, it drives the push rod 3 to rotate. Since the secondary screw 2 is still fixed relative to the primary screw 1, the rotation of the push rod 3 relative to the secondary screw 2 realizes the movement of the push rod 3 in the return direction Y. This part is called the first return stroke. When the second brake 6 of the push rod 3 abuts against the secondary screw 2, the second brake 6 can drive the secondary screw 2 and the push rod 3 to rotate synchronously relative to the primary screw 1, realizing the synchronous return of the push rod 3 and the secondary screw 2. That is, the two move synchronously along the return direction Y. This part is called the second return stroke.

[0103] It needs further explanation that the power output direction of the power component 7 is consistent during the idle stroke, pressure stroke, first return stroke, and second return stroke, meaning that the rotation direction of the flywheel 72 is always consistent. The return of the push rod 3 and the secondary screw 2 is achieved through the cooperation of the clutch 73, the sliding sleeve 33, and the first limiter 4. In contrast, in a traditional screw pressure device, the power component 7 needs to repeatedly change the power output direction, causing the rotation direction of the flywheel 72 to be repeatedly adjusted to achieve the pressure application and return of the push rod 3. Each time the direction is changed, the flywheel 72 and other high-momentum devices need to be braked, decelerated, and stopped, and then restarted and accelerated in the opposite direction. This process consumes a lot of energy, causes great wear on parts, takes a lot of time, has a slow processing cycle, and has low resource utilization efficiency.

[0104] By adopting the above technical solution, the rotation direction of the power component 7 is consistent during the idle stroke, the pressure stroke, and the first return stroke, which reduces energy consumption, part wear, and processing time, and improves processing cycle time and resource utilization efficiency.

[0105] In one embodiment, please refer to [the relevant documentation / reference]. Figure 12 and Figure 13 The screw pressure mechanism 10 also includes a second limiter 8, which limits the rotation of the first-stage screw 1 when the clutch 73 moves along the return direction Y and engages with the sleeve 33.

[0106] Specifically, the second limiter 8 includes a second limit seat 81, a second limit block 82 disposed on the second limit seat 81, and a second limit tooth 83 disposed on the second limit block 82. The outer peripheral side wall of the part of the primary screw 1 that cooperates with the second limiter 8 is provided with a second limit groove 13. The length direction of the second limit groove 13 is parallel to the pressure direction X. In this way, when the second limit tooth 83 meshes with the second limit groove 13, the second limit tooth 83 limits the primary screw 1 to stop rotating.

[0107] The second limiter 8 also includes a first limit drive member connected to the second limit block 82 and used to drive the second limit tooth 83 to separate or engage with the second limit groove 13.

[0108] When the second limiting drive causes the second limiting tooth 83 to engage with the second limiting groove 13, the second limiter 8 limits the top rod 3 to stop rotating; thus, when the first-stage screw 1 is fixed, the second-stage screw 2 returns to its original position under the thread force generated by the engagement of the first thread 12 and the second thread 21, that is, the second-stage screw 2 moves along the return direction Y, and the top rod 3 also moves synchronously with the second-stage screw 2 along the return direction Y, returning to the front end in the pressure direction X;

[0109] When the second limiting drive causes the second limiting tooth 83 to separate from the second limiting groove 13, the second limiter 8 no longer limits the first-stage screw 1. That is, the first-stage screw 1 rotates under the drive of the flywheel 72, which can drive the second-stage screw 2 and the push rod 3 to move along the pressure direction X.

[0110] By adopting the above technical solution, it is ensured that the first-stage screw 1 can be limited to rotate by the second limiter 8, thereby realizing the return of the second-stage screw 2 and the push rod 3.

[0111] In one embodiment, the screw pressure mechanism 10 further includes a third brake 9, which is located at the end of the primary screw 1 in the return direction Y. The third brake 9 has a third brake protrusion, which can abut against the secondary screw 2 to brake the secondary screw 2 to move in the return direction Y. The third brake protrusion surrounds and forms a third brake hole for the top rod 3 to extend out.

[0112] Here, the third brake 9 is used to position the secondary screw 2 and the push rod 3 to the front end of the return stroke, that is, to return the secondary screw 2 and the push rod 3 to the initial position, which is the initial position of the empty stroke and the pressure stroke; specifically, after the secondary screw 2 and the push rod 3 have moved a certain distance in the second return stroke, the third brake 9 is used to brake the secondary screw 2 to continue moving along the return direction Y, so that the secondary screw 2 and the push rod 3 stop rotating synchronously.

[0113] By adopting the above technical solution, it is ensured that the push rod 3 switches smoothly between the return stroke and the idle stroke.

[0114] In one embodiment, clutch 73 is an electromagnetically driven clutch 73.

[0115] By adopting the above technical solution, the control method of clutch 73 is simple, and its small size makes it easy to arrange inside flywheel 72.

[0116] In one embodiment, the first limiter 4 is a chuck structure limiter, and the second limiter 8 is a chuck structure limiter.

[0117] By adopting the above technical solution, the first limiter 4 and the second limiter 8 have simple structures and high reliability.

[0118] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A helical pressure mechanism, characterized in that, include: First-stage screw, push rod, power mechanism; The primary screw has a primary screw hole extending in the pressure direction; the push rod is inserted into the primary screw hole and threadedly engaged with it; the power mechanism includes a flywheel and a clutch mounted on the flywheel, the clutch being selectively connected to either the primary screw or the push rod. When the clutch is connected to the primary screw, the rotational force of the flywheel is transmitted to the primary screw, and the threaded engagement force between the primary screw and the push rod causes the push rod to move in the pressure direction. When the clutch is connected to the push rod, the rotational force of the flywheel is transmitted to the push rod, and the threaded engagement force between the push rod and the primary screw causes the push rod to move in the opposite direction to the pressure direction. The clutch is movable along the axial direction of the flywheel to selectively engage with either the primary screw or the push rod; The spiral pressure mechanism also includes a secondary screw, a first limiter, and a first brake; The primary screw has a primary screw hole extending in the pressure direction, and the hole wall of the primary screw hole has a first thread; the secondary screw is inserted into the primary screw hole, and the outer peripheral sidewall of the secondary screw has a second thread that meshes with the first thread; the secondary screw has a secondary screw hole extending in the pressure direction, and the hole wall of the secondary screw hole has a third thread; the push rod is inserted into the secondary screw hole, and the outer peripheral sidewall of the push rod has a fourth thread that meshes with the third thread; the first limiter is used to limit the movement of the push rod in the pressure direction, and the first brake is used to brake the movement of the secondary screw in the pressure direction; the first brake is located at the end of the primary screw in the pressure direction. When the first brake is not braking the secondary screw, the primary screw rotates relative to the secondary screw, causing the first thread to engage with the second thread to drive the secondary screw and the push rod to move synchronously along the pressure direction; when the first brake is braking the secondary screw, the primary screw and the secondary screw rotate synchronously, causing the third thread to engage with the fourth thread to drive the push rod to move along the pressure direction; wherein, the thread pitch between the first thread and the second thread is greater than the thread pitch between the third thread and the fourth thread.

2. The helical pressure mechanism as described in claim 1, characterized in that, The first braking element has a first braking protrusion, which can abut against the secondary screw to brake the movement of the secondary screw in the direction of pressure application. The first braking protrusion surrounds and forms a first braking hole for the push rod to extend out.

3. The helical pressure mechanism as described in claim 1, characterized in that, The spiral pressure mechanism further includes a second braking element, which is a second braking protrusion formed on the outer peripheral sidewall of the push rod. The second braking protrusion is located at the end of the fourth thread in the pressure direction. The second braking protrusion can abut against the secondary screw so that the secondary screw drives the push rod to move synchronously in the pressure direction.

4. A spiral pressure device, characterized in that, Includes a housing and the helical pressure mechanism as described in any one of claims 1 to 3; The outer casing is provided with a machine compartment and a power port and a stamping port communicating with the machine compartment; The power mechanism includes a power component mounted on the housing, a power output shaft mounted on the power component and extending into the engine compartment, and a flywheel connected to the power output shaft and located inside the engine compartment. The spiral pressure mechanism is housed within the machine compartment. The flywheel can be connected to the primary screw, enabling the flywheel to drive the primary screw to rotate, thereby causing the push rod to extend out of the stamping hole.

5. The spiral pressure device as described in claim 4, characterized in that, The flywheel is also equipped with a clutch, which can move along the pressure direction and the return direction opposite to the pressure direction, so that the flywheel and the first-stage screw can be engaged or disengaged. When the clutch moves along the pressure direction and engages with the first-stage screw, the rotational power of the flywheel is transmitted to the first-stage screw, thereby driving the push rod to move along the pressure direction. When the clutch moves along the return direction and disengages from the first-stage screw, the clutch cuts off the power transmission between the flywheel and the first-stage screw.

6. The spiral pressure device as described in claim 5, characterized in that, The first limiter is detachably connected to the push rod. When the clutch moves along the pressure direction and engages with the first-stage screw, the first limiter limits the movement of the push rod along the pressure direction; when the clutch moves along the return direction and disengages from the first-stage screw, the first limiter separates from the push rod.

7. The spiral pressure device as described in claim 5, characterized in that, The push rod is also provided with a sliding sleeve for driving the push rod to rotate. The clutch can move along the return direction and the pressure direction, so that the flywheel and the sliding sleeve are engaged or disengaged. When the clutch moves along the return direction and engages with the sliding sleeve, the rotational power of the flywheel is transmitted to the sliding sleeve, and the sliding sleeve can drive the push rod to rotate relative to the secondary screw, thereby driving the push rod to move along the return direction. When the clutch moves along the pressure direction and disengages from the sliding sleeve, the power transmission between the flywheel and the sliding sleeve is cut off.

8. The spiral pressure device as described in claim 7, characterized in that, The spiral pressure mechanism further includes a third braking element, which is located at the end of the primary screw in the return direction. The third braking element has a third braking protrusion, which can abut against the secondary screw to brake the secondary screw to move in the return direction. The third braking protrusion surrounds and forms a third braking hole for the push rod to extend out.

Images