CN113695492A - Steel wire preloading crimping device - Google Patents
Steel wire preloading crimping device Download PDFInfo
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- CN113695492A CN113695492A CN202111252791.3A CN202111252791A CN113695492A CN 113695492 A CN113695492 A CN 113695492A CN 202111252791 A CN202111252791 A CN 202111252791A CN 113695492 A CN113695492 A CN 113695492A
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- Prior art keywords
- wire
- steel wire
- preloading
- positioning
- loading cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
- B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F9/00—Straining wire
- B21F9/002—Straining wire to maintain tension in the wire, e.g. to pull the wire taut
Abstract
The invention discloses a steel wire preloading compression joint device, and belongs to the technical field of medical instrument auxiliary devices. The steel wire preloading and crimping device comprises a mounting plate and a plurality of preloading components mounted on the mounting plate, wherein the preloading components are used for preloading steel wires and comprise a first loading cylinder, a second loading cylinder, a wire clamp structure and a first guide rail, the wire clamp structure is connected to the first guide rail in a sliding mode, the first guide rail is arranged on the mounting plate, and the wire clamp structure is used for clamping the steel wires; a first telescopic rod of the first loading cylinder is connected with the wire clamp structure in a sliding manner, a limiting part on the first telescopic rod is matched with the first telescopic rod to drive the wire clamp structure to slide towards a preset direction and tension a steel wire, and a second telescopic rod of the second loading cylinder is fixedly connected with the wire clamp structure and drives the wire clamp structure to slide along a first guide rail; the first loading cylinder is used for driving the wire clamp structure to calibrate the primary tension of the steel wire, and the second loading cylinder is used for driving the wire clamp structure to calibrate the secondary tension of the steel wire.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a steel wire preloading compression joint device.
Background
The soft tissue robot is provided with the multifunctional channel device, the adjustable vertebra components of the multifunctional channel device realize the bending actions of up, down, left and right through the steel wires, and in order to ensure that all the steel wires realize the same action effect under the same action force, the length of the steel wires is required to be ensured to be consistent, and the pre-loading is required to be consistent, so that a certain action force is required to be loaded on the steel wires when the steel wires are pressed and connected, and meanwhile, the loaded action force is required to be ensured to be equal.
In the prior art, various forms of vertebral segments are combined into an adjustable vertebral component, and then steel wire traction is matched or the steel wires of the vertebral segments are mostly crimped by adopting fixed length. The wires are typically pre-cut to equal lengths, threaded through the vertebral segments and then crimped to shape.
However, the length of the steel wire compression joint is a fixed value, the vertebral segments have dimensional tolerance, and an adjustable vertebral component formed by connecting a plurality of vertebral segments has certain dimensional deviation, so that the conditions that some steel wires are too tight and some steel wires are too loose exist, and the steel wire pretightening force is different, so that when the steel wires are tightened or released to perform vertebral segment bending action, the vertebral segments have inconsistent reaction to the same acting force, the following performance is poor, and the requirement of accurate control cannot be met.
Disclosure of Invention
The embodiment of the invention aims to provide a steel wire preloading compression joint device, which can solve the problems of poor follow-up performance and low control precision of the steel wire preloading compression joint device in the prior art.
In order to solve the technical problem, the invention is realized as follows:
the embodiment of the invention provides a steel wire preloading and crimping device which is used for realizing steel wire crimping of a multifunctional passage device, and comprises a mounting plate and a plurality of preloading components arranged on the mounting plate, wherein the preloading components are used for preloading steel wires, and the number of the preloading components is greater than or equal to that of the steel wires of the multifunctional passage device; the pre-loading assembly comprises a first loading cylinder, a second loading cylinder, a wire clamp structure and a first guide rail, wherein the first loading cylinder and the second loading cylinder are arranged in parallel and are simultaneously mounted on the mounting plate, the wire clamp structure is slidably connected to the first guide rail, the first guide rail is arranged on the mounting plate, and the wire clamp structure is used for clamping a steel wire; the first telescopic rod of the first loading cylinder is connected with the wire clamp structure in a sliding manner, a limiting part is arranged on the first telescopic rod, the limiting part is matched with the first telescopic rod to drive the wire clamp structure to slide towards a preset direction and tension a steel wire, the second telescopic rod of the second loading cylinder is fixedly connected with the wire clamp structure, and the second telescopic rod drives the wire clamp structure to slide along the first guide rail; the first loading cylinder is used for driving the wire clamp structure to load the primary tensile force of the steel wire, and the second loading cylinder is used for driving the wire clamp structure to load the secondary tensile force of the steel wire, so that the tensile force applied to the steel wire reaches an allowable value.
In an embodiment of the invention, a mounting plate is provided for mounting the preload assembly. The pre-loading assembly is arranged for pre-loading the steel wire of the multifunctional channel device. After the preloading assemblies are arranged into a plurality of groups, each preloading assembly can be connected with one steel wire and is used for preloading the steel wire; after the number of the preloading components is larger than or equal to the number of the steel wires of the multifunctional passage device, the multifunctional passage device can be adapted to various models. The setting of first loading cylinder is used for driving the preliminary pulling force loading of fastener structure to the steel wire, and the setting of second loading cylinder is used for driving the fastener structure to the loading of steel wire secondary pulling force to the pulling force that makes the steel wire receive reaches the allowed value. The steel wire can be secondarily adjusted in the same direction by the parallel arrangement of the first loading cylinder and the second loading cylinder; the fastener structure is used for the centre gripping steel wire for the steel wire is fixed at the fastener structural, and the fastener structure slides with first guide rail and links to each other, makes the fastener structure can follow first guide rail and slides, and first guide rail sets up on the mounting panel. The first telescopic rod is connected with the wire clamp structure in a sliding mode, the limiting part on the first telescopic rod is matched with the wire clamp structure to drive the wire clamp structure to slide towards the preset direction on the first guide rail and tension the steel wire, the arrangement can enable the first loading cylinder to achieve the effects of pulling the wire clamp structure in one direction and releasing the wire clamp structure in the reverse direction, the steel wire is pulled, the possibility of steel wire winding and friction clamping stagnation is reduced, the first loading cylinder can be disabled after releasing the wire clamp structure in the reverse direction, and the wire clamp structure only works through the second loading cylinder; the second telescopic link and fastener structure fixed connection, and the second telescopic link drives the fastener structure and slides along first guide rail, and such setting can make second loading cylinder push away or draw the fastener structure, realizes the regulation to the steel wire elasticity. The first loading cylinder drives the wire clamp structure to slide on the first guide rail to carry out primary tension loading on the steel wire, and the second loading cylinder drives the wire clamp structure to slide on the first guide rail to carry out secondary tension loading on the steel wire until tension received by the steel wire reaches an allowable value. The embodiment of the invention has the beneficial effects of higher steel wire preloading precision and reduction of steel wire winding and friction clamping stagnation.
Drawings
FIG. 1 is a schematic structural view of a steel wire preloading and crimping device connected with a multifunctional channel connector in an embodiment of the invention;
FIG. 2 is a top view of a wire pre-load crimp device coupled to a multi-function channel in an embodiment of the present invention;
FIG. 3 is a side view of a wire pre-load crimp device coupled to a multi-function channel in an embodiment of the present invention;
FIG. 4 is a schematic structural view of a positioning guide assembly in an embodiment of the present invention;
FIG. 5 is a side view of a positioning guide assembly in an embodiment of the present invention;
FIG. 6 is another side view of the positioning guide assembly in accordance with an embodiment of the present invention;
FIG. 7 is a horizontal cross-sectional view of a positioning guide assembly at position A-A in an embodiment of the present invention;
FIG. 8 is a schematic structural view of a crimping assembly in an embodiment of the invention;
FIG. 9 is a side view of a crimping assembly in an embodiment of the invention;
FIG. 10 is a schematic view of a crimp assembly coupled to a multi-function channel in an embodiment of the present invention;
FIG. 11 is a top view of a crimp assembly coupled to a multi-function channel in an embodiment of the present invention;
FIG. 12 is a top view of a crimping assembly in an embodiment of the invention;
FIG. 13 is a side view of a crimping assembly in an embodiment of the invention;
FIG. 14 is a schematic structural view of a portion of a crimping assembly in an embodiment of the invention;
FIG. 15 is a schematic structural view of a control board in an embodiment of the present invention;
FIG. 16 is a schematic structural view of a workpiece positioning assembly in an embodiment of the invention;
FIG. 17 is a side view of a wire work piece positioning assembly in an embodiment of the present invention;
FIG. 18 is a side view of another orientation of the workpiece positioning assembly in an embodiment of the invention;
FIG. 19 is a top view of a workpiece positioning assembly in an embodiment of the invention;
FIG. 20 is a schematic structural diagram of a preload assembly in an embodiment of the present invention;
FIG. 21 is a side view of a preload assembly in an embodiment of the present invention;
FIG. 22 is a top view of a preload assembly in an embodiment of the present invention.
Description of reference numerals:
46. a multifunctional channel device; 462. a steel tube entering the abdomen; 466. a steel wire; 70. mounting a plate; 71. a preload assembly; 72. positioning a guide assembly; 73. a workpiece positioning assembly; 74. a crimping assembly; 75. a crimping head; 711. a first loading cylinder; 712. a second loading cylinder; 713. a wire clamp structure; 714. a first guide rail; 715. a cylinder block; 7111. a first telescopic rod; 7112; a limiting member; 7113. a first cylinder; 7121. a second telescopic rod; 7122. a second cylinder; 7131. a clamping portion; 7132. a mounting seat; 7133. a first slider; 721. a positioning structure; 722. a guide structure; 7211. positioning blocks; 7212. positioning the mandrel; 72111. positioning holes; 72112. an avoidance groove; 731. a support block; 732. a support pillar; 7311. a through hole; 741. electric pressing pliers; 742. a second slider; 743. a second guide rail; 744. a control panel; 745. a mechanical diverter valve; 7441. a general department; 7442. a widening section; 7451. a sliding platen; 7411. pressing the blocks; 7412. and (7) pressing the blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the invention may be practiced other than those illustrated or described herein, and that the objects identified as "first," "second," etc. are generally a class of objects and do not limit the number of objects, e.g., a first object may be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The steel wire preloading and crimping device provided by the embodiment of the invention is described in detail by specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Referring to fig. 1 to 22, an embodiment of the present invention provides a steel wire preloading and crimping device for implementing crimping of steel wires 466 of a multifunctional channel device 46, the steel wire preloading and crimping device includes a fixing structure, a mounting plate 70 and a plurality of preloading components 71 mounted on the mounting plate 70, the fixing structure is fixedly connected with the mounting plate 70, the fixing structure is used for fixing the multifunctional channel device 46, the preloading components 71 are used for preloading the steel wires 466, the number of the preloading components 71 is equal to the number of the steel wires 466 of the multifunctional channel device 46, the fixing structure is fixedly connected with the mounting plate 70, and the fixing structure is used for fixing the multifunctional channel device 46;
the preloading assembly 71 comprises a first loading cylinder 711, a second loading cylinder 712, a wire clamping structure 713 and a first guide rail 714, wherein the first loading cylinder 711 and the second loading cylinder 712 extend in the same direction and are simultaneously mounted on the mounting plate 70, the wire clamping structure 713 is slidably connected to the first guide rail 714, the first guide rail 714 is arranged on the mounting plate 70, and the wire clamping structure 713 is used for clamping a steel wire 466;
the first telescopic rod 7111 of the first loading cylinder 711 is slidably connected with the wire clamp structure 713, a limiting member 7112 is arranged on the first telescopic rod 7111, the limiting member 7112 is matched with the first telescopic rod 7111 to drive the wire clamp structure 713 to slide towards a preset direction and tension the steel wire 466, and the second telescopic rod 7121 of the second loading cylinder 712 is fixedly connected with the wire clamp structure 713;
the first loading cylinder 711 is configured to drive the wire clamp structure 713 to primarily load the tension of the steel wire 466, and the second loading cylinder 712 is configured to drive the wire clamp structure 713 to secondarily load the tension of the steel wire 466, so that the tension applied to the steel wire 466 reaches an allowable value.
In the embodiment of the present invention, the mounting plate 70 is configured to mount the preload assembly 71, and the fixing structure is fixedly connected to the mounting plate 70 and configured to fix the multi-function channel 46. The provision of the preload assembly 71 serves to preload the steel wire 466 of the multi-function channel 46. After the preloading components 71 are arranged in a plurality of numbers, each preloading component 71 can be connected with one steel wire 466 to preload the steel wires 466; after the number of preload assemblies 71 is equal to the number of wires 466 of the multi-function channel 46, multiple models of multi-function channel 46 can be accommodated. The first loading cylinder 711 is arranged for driving the wire clamp structure 713 to primarily load tensile force on the steel wire 466, and the second loading cylinder 712 is arranged for driving the wire clamp structure 713 to secondarily load tensile force on the steel wire 466, so that the tensile force applied to the steel wire 466 reaches an allowable value. The steel wire 466 is secondarily adjusted in the same direction by the extension of the first loading cylinder 711 and the second loading cylinder 712 in the same direction, so that the beneficial effect of reducing the adjustment error is achieved; the cleat structure 713 is adapted to retain the wire 466 such that the wire 466 is secured to the cleat structure 713, the cleat structure 713 is slidably coupled to the first rail 714 such that the cleat structure 713 is slidable along the first rail 714, and the first rail 714 is disposed on the mounting plate 70. The first telescopic rod 7111 is slidably connected with the wire clamp structure 713, the limiting part 7112 on the first telescopic rod 7111 is matched with the wire clamp structure 713 to drive the wire clamp structure 713 to slide towards a preset direction on the first guide rail 714 and tension the steel wire 466, through the matching between the first guide rail 714 and the limiting part 7112, the first loading cylinder 711 can perform the effects of one-way pulling and reverse loosening on the wire clamp structure 713, the steel wire 466 is pulled, the possibility of winding and friction clamping stagnation of the steel wire 466 is reduced, the first loading cylinder 711 can be disabled after the reverse loosening, the second loading cylinder 712 only works, and the second telescopic rod 7121 is fixedly connected with the wire clamp structure 713. The first loading cylinder 711 drives the wire clamp structure 713 to slide on the first guide rail 714 to perform primary tension loading on the steel wire 466, and the second loading cylinder 712 drives the wire clamp structure 713 to slide on the first guide rail 714 to perform secondary tension loading on the steel wire 466 until tension on the steel wire 466 reaches an allowable value. The embodiment of the invention can ensure that the pretightening force of each steel wire 466 is the same, and the steel wires 466 with the same pretightening force and the same length are connected into the adjustable vertebral members in the multifunctional channel device 46, so that the force applied to the adjustable vertebral segment components by each steel wire 466 is the same, the control on the vertebral segment components is improved, and the invention has the beneficial effects of improving the motion precision of the adjustable vertebral segment components in the multifunctional channel device and reducing the winding and friction clamping stagnation of the steel wires 466.
It should be noted that the dynamic adjustment of the preload force is realized by adopting two-stage synchronous preloading, and since the responses of the steel wires 466 are consistent when the same acting force is applied, the vertebral segments have consistent response to the same acting force under the condition of applying the same driving force to the multifunctional channel device 46, the following performance is high, and the precise control can be achieved.
Optionally, in an embodiment of the present invention, the wire clamp structure 713 includes a clamping portion 7131, a mounting seat 7132 and a first sliding block 7133, the clamping portion 7131 is fixedly connected to the mounting seat 7132, the clamping portion 7131 is used for clamping the steel wire 466, the mounting seat 7132 is fixedly connected to the first sliding block 7133, and the first sliding block 7133 is slidably connected to the first guiding rail 714;
the first telescopic rod 7111 penetrates through and is slidably connected to the mounting base 7132, the limiting member 7112 is located at a first end of the first telescopic rod 7111, the first end is an extending portion of the first telescopic rod 7111 penetrating through the mounting base 7132, and the second telescopic rod 7121 is fixedly connected to the mounting base 7132.
In the embodiment of the present invention, the clamping portion 7131 is configured to clamp the steel wire 466, the mounting seat 7132 is configured to indirectly fix the clamping portion 7131 to the mounting plate 70, the clamping portion 7131 is fixedly connected to the mounting seat 7132, the clamping portion 7131 is matched with the mounting seat 7132 to connect the steel wire 466 to the mounting seat 7132, the first slider 7133 is configured to drive the mounting seat 7132 to slide, the mounting seat 7132 is connected to the first slider 7133, the first slider 7133 is connected to the first guide rail 714 in a sliding manner, and the first slider 7133 can drive the steel wire 466 to slide on the first guide rail 714. The first retractable rod 7111 is disposed through the mounting base 7132, an extending portion of the first retractable rod 7111 passing through the mounting base 7132 is a first end, the position-limiting member 7112 is disposed to limit a moving direction of the first retractable rod 7111, the position-limiting member 7112 is disposed at the first end of the first retractable rod 7111, the first retractable rod 7111 is fixedly connected to the mounting base 7132 through the position-limiting member 7112, and the second retractable rod 7121 is fixedly connected to the mounting base 7132.
It should be noted that, according to the above structure, two-stage synchronous preloading is realized by the first loading cylinder 711 and the second loading cylinder 712, respectively, and the first loading cylinder 711 can only pull the wire clamp mounting seat 7132 backward, but cannot push the wire clamp mounting seat 7132 forward, and the second loading cylinder can drive the wire clamp mounting seat 7132 to pull backward or push forward.
Optionally, in an embodiment of the present invention, the limiting member 7112 is a nut, and the nut is in threaded connection with the first telescopic rod 7111.
In the embodiment of the invention, the nut is connected with one end of the first telescopic rod 7111 penetrating through the installation seat 7132 through a thread, and the first telescopic rod 7111 is connected with the nut so that the first loading cylinder 711 is fixedly connected with the installation seat 7132. The embodiment of the invention has the beneficial effects that the first loading cylinder 711 is fixed on the mounting seat 7132, so that the first loading cylinder 711 can only pull the wire clamp mounting seat 7132 backwards and cannot push the wire clamp mounting seat 7132 forwards
Alternatively, in the embodiment of the present invention, the first cylinder block 7113 of the first loading cylinder 711 is mounted to the mounting plate 70 by a cylinder block, the second cylinder block 7122 of the second loading cylinder 712 is mounted to the mounting plate 70 by a cylinder block, and the first loading cylinder 711 and the second loading cylinder 712 are arranged at intervals in the up-down direction on the cylinder block 715.
In the embodiment of the present invention, the first cylinder block 7113 is disposed on the cylinder 711 base, the second cylinder block 7122 is disposed on the cylinder 712 base, the first loading cylinder 711 and the second loading cylinder 712 are integrally disposed on the mounting plate 70, and the first loading cylinder 711 and the second loading cylinder 712 which are vertically arranged on the cylinder base 715 can maintain the same direction as much as possible to apply the loading force to the wire 466, thereby reducing the loading force error.
It should be noted that the first loading cylinder 711 and the second loading cylinder 712 may also be disposed on the mounting plate 70, which is not limited in this embodiment of the present invention, and when the first loading cylinder 711 base and the second loading cylinder 712 base are disposed separately, the first loading cylinder 711 base and the second loading cylinder 712 base may be vertically arranged, horizontally arranged, or randomly arranged on the mounting plate 70, which is not limited in this embodiment of the present invention.
Alternatively, in an embodiment of the present invention, a first pressure regulating valve is installed on the first loading cylinder 711, a second pressure regulating valve is installed on the second loading cylinder 712, the first pressure regulating valve is used for regulating the air pressure of the first loading cylinder 711, the second pressure regulating valve is used for regulating the air pressure of the second loading cylinder 712, and the first pressure regulating valve and the second pressure regulating valve are independent of each other.
In the embodiment of the present invention, each of the first loading cylinder 711 and the second loading cylinder 712 is provided with an independent pressure regulating valve, the first pressure regulating valve is installed on the first loading cylinder 711, the first pressure regulating valve is installed on the second loading cylinder 712, the first pressure regulating valve and the second pressure regulating valve do not interfere with each other, and the air pressures of the first loading cylinder 711 and the second loading cylinder 712 can be independently adjusted. The embodiment of the invention has the beneficial effects that a scheme capable of realizing two-stage synchronous preloading can be realized, the dynamic adjustment of the final allowable preloading force can be realized, the requirement of larger preloading force for straightening when the steel wire 466 is wound is avoided, and the risk that the larger preloading force can exceed the final allowable preloading force of the steel wire 466 is reduced. It should be noted that the force generated by the second loading cylinder 712 should be a product allowable preload force.
Optionally, in an embodiment of the present invention, the preload assembly 71 is provided in 4, 4 of the preload assemblies 71 being in an annular array on the mounting plate 70 relative to the multi-function channel 46;
wherein, the 4 first loading cylinders 711 share the air source and are driven simultaneously, and the 4 second loading cylinders 712 share the air source and are driven simultaneously.
In an embodiment of the present invention, 4 preload assemblies 71 are provided in a wire preloaded crimping device, with 4 preload assemblies 71 being provided in an annular array on mounting plate 70, each preload assembly 71 being connected to one wire 466, depending on the configuration of the vertebral level assemblies in multi-functional tunneler 46. 4 first loading cylinders 711 respectively arranged on the 4 preloading assemblies 71 share an air source, and the 4 first loading cylinders 711 can be simultaneously ventilated and can simultaneously move to form a parallel effect; the 4 second loading cylinders 712 respectively arranged on the 4 preloading components 71 share the air source, and the 4 first loading cylinders 711 can be simultaneously ventilated and can move simultaneously, so that a parallel effect is formed. The embodiment of the invention has the beneficial effects that the preloading components 71 are uniformly arranged, so that the difference of pretightening force applied to the 4 steel wires 466 by the 4 preloaders is reduced.
Optionally, in the embodiment of the present invention, the fixing structure further includes a positioning guide assembly 72, the positioning guide assembly 72 includes a positioning structure 721 and a guide structure 722, the positioning structure 721 is connected to the guide structure 722;
the positioning structure 721 is detachably connected with the multifunctional passage device 46, the positioning structure 721 is used for installing and positioning the multifunctional passage device 46, the guiding structure 722 is movably connected with the steel wire 466, and the guiding structure 722 is used for guiding the steel wire 466.
In the embodiment of the present invention, the positioning and guiding structure 722 is formed by connecting a positioning structure 721 with a guiding structure 722, wherein the multifunctional channel device 46 can be detachably connected with the positioning structure 721, when the steel wire 466 is pre-loaded and crimped, the multifunctional channel device 46 is connected with the positioning structure 721, the positioning structure 721 is used for limiting the position of the multifunctional channel device 46, the guiding structure 722 is movably connected with the steel wire 466, the guiding structure 722 is used for guiding the steel wire 466 to extend in a certain direction, and the positioning structure 721 and the guiding structure 722 are connected with each other for guiding the steel wire 466 to be connected with the multifunctional channel device 46. Embodiments of the present invention have the advantageous effect that the guide wire 466 extends in a certain direction and is connected with the multi-functional channel 46.
It should be noted that the tension meter can also be detachably connected to the positioning structure 721, and when calibrating the pre-load force, the tension meter is connected to the positioning structure 721, the guiding structure 722 is used for guiding the steel wire 466 to extend along a certain direction, and the positioning structure 721 and the guiding structure 722 are connected to each other for guiding the steel wire 466 to be connected to the tension meter.
Optionally, in an embodiment of the present invention, the positioning structure 721 includes a positioning block 7211 and a positioning core 7212, the positioning block 7211 is provided with a positioning hole 72111, the positioning core 7212 is partially located in the positioning hole 72111, and the multifunctional channel 46 is sleeved on the positioning core 7212.
In the embodiment of the present invention, the positioning core shaft 7212 and the positioning block 7211 are fixedly connected through the positioning hole 72111 on the positioning block 7211, the positioning core shaft 7212 is partially located in the positioning hole 72111, and the positioning hole 72111 is used for limiting the position of the positioning core shaft 7212 and enhancing the stability of the positioning core shaft 7212.
Optionally, in an embodiment of the present invention, the positioning block 7211 is provided with an avoiding groove 72112, the guiding structure 722 is mounted on a groove wall of the avoiding groove 72112, and the guiding structure 722 is a pulley for guiding the stretching direction of the steel wire 466 from the installation position of the multifunctional channel 46 to the position of the wire clamping structure 713; wherein, the number of the pulleys is the same as that of the steel wires 466 and corresponds to one another.
In the embodiment of the present invention, the pulleys are installed on the groove wall of the avoiding groove 72112 of the guiding structure 722, the pulleys are used for guiding one end of the steel wire 466 to be stretched in the same direction as the arrangement direction of the wire clamping structure, the pulleys are also used for guiding the other end of the steel wire 466 to be connected with the wire clamping structure 713, and the pulleys correspond to the steel wires 466 one to one. The embodiment of the present invention has an advantageous effect of guiding the extension of the steel wire 466 such that one end of the steel wire 466 is connected to the multi-functional gateway 46 and the other end of the steel wire 466 is connected to the clip structure 713.
Note that the sheave center of each guide pulley is located on the diagonal line of the positioning block 7211.
It should be noted that the pulley is also used to guide the direction of the wire 466 to the direction in which the tension gauge is installed when the preload force is calibrated, and further, to guide the direction in which the wire 466 is stretched to coincide with the direction in which the tension gauge is installed.
Optionally, in the embodiment of the present invention, there are 4 pulleys, and two positioning blocks 7211 are disposed oppositely; two on locating piece 7211 dodge groove 72112 and form the V type jointly and be provided with 2, 2 dodge groove 72112 to have 4 cell walls, the pulley set up in the cell wall to the one-to-one, 4 the pulley is in crisscross setting in the axis direction of positioning mandrel 7212.
In the embodiment of the present invention, since the aforementioned 4 steel wires 466 are provided, and the pulleys correspond to the steel wires 466 one by one, 4 pulleys are also provided, and also correspond to the steel wires 466 one by one, two V-shaped avoidance grooves 72112 formed in each of the two positioning blocks have 4 groove walls, 4 pulleys are provided corresponding to the 4 groove walls one by one, and the pulleys respectively provided on the 4 groove walls are staggered in the axial direction of the positioning spindle 7212.
Optionally, in an embodiment of the present invention, the fixing structure further includes a workpiece positioning assembly 73, the workpiece positioning assembly 73 includes a supporting block 731 and a supporting column 732, the supporting block 731 is fixedly connected to a top end of the supporting column 732, a through hole 7311 is formed in the supporting block 731, and the through hole 7311 is used for sleeving the web steel pipe 462 connected to the multifunctional channel device 46; the bottom end of the support column 732 is fixedly connected to the mounting plate 70.
In the embodiment of the invention, the supporting block 731 is fixedly connected with the top end of the supporting column 732, a through hole 7311 formed in the supporting block 731 is used for connecting with the multifunctional channel device 46, when the steel wire 466 is preloaded and pressed, the through hole 7311 is connected with the multifunctional channel device 46, the through hole 7311 is sleeved on the abdomen-entering steel pipe 462 connected with the multifunctional channel device 46, the wire clamp is connected with one end of the steel wire 466, and the other end of the steel wire 466 is guided to a position consistent with the arrangement direction of the multifunctional channel device 46 through a pulley. The bottom end of the support column 732 is fixedly connected to the mounting plate 70, and the support column 732 is used for providing a supporting force for the supporting block 731. Embodiments of the present invention have the benefit of providing support for the multi-functional channel 46.
Note that a relief space is provided on a surface of the support column 732 facing the positioning block 7211.
It should also be noted that the through hole 7311 is also used to connect with a tension meter when the preload force is calibrated.
Optionally, in an embodiment of the present invention, the wire pre-load crimping apparatus further comprises a crimping assembly 74, the crimping assembly 74 being mounted to the mounting plate 70, the crimping assembly 74 being configured to crimp the wire 466 onto the crimping head 75 of the multi-function channel 46.
In an embodiment of the present invention, the crimping assembly 74 is mounted on the mounting plate 70, the crimping devices are connected to the 4 preloading assemblies 71 by 4 steel wires 466, respectively, and the crimping assembly 74 is used for crimping the steel wires 466 on the crimping head 75 of the multi-functional gateway 46 to achieve crimping of the steel wires 466 of the end of the adjustable vertebral level of the multi-functional gateway 46.
Optionally, in an embodiment of the present invention, the crimping assembly 74 includes an electric crimper 741, a second slider 742 and a second guide rail 743, the electric crimper 741 and the slider are fixedly connected, the second slider 742 and the second guide rail 743 are slidably engaged, and the second guide rail 743 is disposed on the mounting plate 70;
the jaw of the electric pressing pliers 741 faces the crimping head 75, an upper pressing block 7411 and a lower pressing block 7412 are disposed in the jaw, the upper pressing block 7411 and the lower pressing block 7412 are used for pressing the steel wire 466 onto the crimping head 75, and the second slider 742 and the second guide rail 743 cooperate to drive the electric pressing pliers 741 to approach or separate from the crimping head 75.
In the embodiment of the present invention, the electric pressing pliers 741 is fixedly connected to the second slider 742, the second slider 742 is disposed on the second guide rail 743, and the second slider 742 drives the electric pressing pliers 741 to slide on the second rail, wherein the jaws of the electric pressing pliers 741 face the pressing head 75, in practical applications, the jaws are opened to allow the pressing head 75 to enter the jaws, the upper pressing block 7411 and the lower pressing block 7412 cooperate to enclose a shape adapted to the periphery of the pressing head 75, the steel wire 466 is pressed against the pressing head 75 while fixing the position of the pressing head 75, and the second slider 742 cooperates with the second guide rail 743 to drive the electric pressing to approach or move away from the pressing head 75.
The electric crimper 741 supplies a power source to crimp the steel wire 466 to the multi-functional conduit air crimping head 75, thereby crimping the 4 wire steel wires 466.
It should be noted that an offset space is provided on a surface of the support post 732 facing the positioning block 7211, so as to prevent the electric pressing pliers 741 from colliding with the support post 732 in the process of approaching the crimping head 75.
Optionally, in an embodiment of the present invention, the crimping assembly 74 further includes a control plate 744 and a mechanical direction changing valve 745, the control plate 744 is fixedly connected to one side of the second slider 742, the mechanical direction changing valve 745 is fixedly connected to the mounting plate 70, the second slider 742 drives the control plate 744 to move, a sliding pressure plate 7451 of the mechanical direction changing valve 745 abuts against the control plate 744, and the sliding pressure plate 7451 realizes state switching during the movement of the control plate 744.
In the embodiment of the present invention, the control board 744 is fixedly connected to one side of the second slider 742, the mechanical direction changing valve 745 is fixedly connected to the mounting board, the control board 744 is driven by the second slider 742 to slide on the second guide rail 743, the sliding pressing plate 7451 of the mechanical direction changing valve 745 abuts against the control board 744, when the control board slides along the second guide rail 743 under the drive of the second slider 742, it means that the sliding pressing plate 7451 passively abuts against different positions of the control board 744, and the state switching of the sliding pressing plate 7451 is realized during the movement of the control board 744. The embodiment of the present invention has an advantageous effect of implementing the state switching of the slide platen 7451 by the movement of the control plate 744.
Optionally, in an embodiment of the present invention, the control plate 744 comprises a normal portion 7441 and a widened portion 7442, the sliding platen 7451 being switchable between two states, the sliding platen 7451 being in a first state when the sliding platen 7451 abuts the widened portion 7442; when the sliding platen 7451 abuts against the normal portion 7441, the sliding platen 7451 is in a second state;
when the sliding platen 7451 is in the first state, the first loading cylinders 711 are all activated;
when the sliding platen 7451 is in the second state, the second loading cylinders 712 are both activated and the first loading cylinders 711 are both deactivated or deactivated, and the retaining members 7112 are moved away from the cleat structures 713.
In the embodiment of the present invention, the widened portion 7442 and the normal portion 7441 are provided to switch the state of the sliding pressure plate 7451, the sliding pressure plate 7451 abuts against the normal portion 7441 and the widened portion 7442 respectively during movement, when the sliding pressure plate 7451 abuts against the normal portion 7441, the sliding pressure plate 7451 is in the first state, the sliding pressure plate 7451 in the first state starts all the first loading cylinders 711, and at this time, compressed air is introduced into all the first loading cylinders 711; when the sliding press plate 7451 abuts against the normal portion 7441, the sliding press plate 7451 in the second state activates all the second loading cylinders 712, at this time, compressed air is introduced into all the second loading cylinders 712, and all the first loading cylinders 711 are operated in a reverse direction or stopped, and the limiting member 7112 is away from the wire clamp structure 713.
Since all the first loading cylinders 711 are connected in parallel and all the second loading cylinders 712 are connected in parallel, all the first loading cylinders 711 are simultaneously actuated and all the second loading cylinders 712 are simultaneously actuated, and are always tensioned simultaneously with all the wires 466.
In making the preload force calibration, the tension gauge is first placed on the workpiece positioning assembly 73 and then connected to the clamp structure 713 of 1 preload assembly 71 by a wire 466 that passes around the positioning guide assembly 72. First, the first loading cylinder 711 of the corresponding pre-loading assembly 71 is ventilated, the first loading cylinder 711 pulls the steel wire 466 backward, the corresponding tension value (assuming a preset value of 50N) is displayed on the tension meter, the air pressure of the first loading cylinder 711 is increased or decreased by the first pressure regulating valve, the tension value of the tension meter reaches the corresponding tension value (assuming a preset value of 50N), and then the tension calibration of the first loading cylinder 711 in the remaining 3 pre-loading assemblies 71 is sequentially completed. After the 4 first loading cylinders 711 complete the tension calibration, the 4 second loading cylinders 712 complete the tension calibration in the same manner.
After the tension calibration of the 4 first loading cylinders 711 and the 4 second loading cylinders 712 is completed, the steel wire 466 is preloaded and crimped.
It should be noted that, for the convenience of calibration, the crimping assembly 74 may be moved back along the slide rails to leave a certain clearance.
It should be further noted that the magnitude of the first preload force generated by the first loading cylinder 711 is about 1.5 to 4 times of the second preload force generated by the second loading cylinder 712, and the second preload force is equal to the product allowable preload force; because the first preload force is larger than the second preload force, the bent steel wire 466 can be quickly straightened by the larger preload force of the first loading cylinder 711, then the second loading cylinder 712 is used for exerting smaller preload force on the steel wire 466, pre-tightening force is exerted on the steel wire 466, the steel wire 466 is prevented from being broken, the possibility that the steel wire 466 is wound and is blocked by friction is avoided by adopting larger tension, and meanwhile, the final allowable preload force is separated from the preload tension, so that the dynamic adjustment of the final allowable preload force can be realized, the requirement of larger preload force for straightening when the steel wire 466 is wound is avoided, and the beneficial effect of reducing the risk that the larger preload force can exceed the final allowable preload force of the steel wire 466 is achieved.
After calibration of the preload force is completed, the crimping assembly 74 is first retracted, the plain portion 7441 of the control plate 744 is brought into abutment with the sliding pressure plate 7451 of the mechanical diverter valve 745, and the multi-function channel 46 is placed on the workpiece positioning assembly 73, with the 4 wires 466 of the product passing around the pulleys and connected to the clamp structures 713 of the 4 preload assemblies 71. Compressed air is introduced to the air inlet end of the mechanical reversing valve 745, the air outlet end of the mechanical reversing valve 745 is communicated with the 4 first loading cylinders 711, at this time, the sliding pressure plate 7451 of the mechanical reversing valve 745 is in the first state (the pulling force applied to the 4 first loading cylinders is the same because the aforementioned pulling force calibration work of the 4 preloading cylinders is completed), and the force generated by the first loading cylinders 711 is far greater than the winding force of the steel wire 466 and the starting force required by various moving accessories, so that the 4 steel wires 466 can be straightened.
The first load cylinder 711 is a large stroke cylinder having a large stroke when it moves, and the second load cylinder 712 is a small stroke cylinder having a small stroke when it moves. The first loading cylinder 711 can rapidly pull the steel wire 466 (which may or may not be loaded with a loading force) when pulling the steel wire 466, and then, the second loading cylinder 712 loads a pre-tightening force.
After the 4 steel wires 466 are straightened, the crimping assembly 74 is pushed forward, so that the common part 7441 on the control plate 744 is abutted to the sliding pressing plate 7451 of the mechanical reversing valve 745, at this time, because the sliding pressing plate 7451 of the mechanical valve is in the second state, 4 second loading cylinders 712 are communicated with the air outlet of the mechanical reversing valve 745, which is equivalent to ventilating the second loading cylinders 712, and at the same time, the first loading cylinders 711 are ventilated reversely, at this time, the second loading cylinders 712 are tensioned, the first loading cylinders 711 move backwards reversely, because the first loading cylinders 711 are in sliding fit with the wire clamping seats, the wire clamping structures 713 cannot be pushed back by the first loading cylinders 711, at this time, the wire clamping structures 713 are only tensioned by the second loading cylinders 712, at this time, the preloading force loaded on the steel wires is the force generated by the second loading cylinders 712, that is the preloading force is permitted. Finally, the electric pressing pliers on the pressing component 74 are started, the steel wire 466 is pressed to the pressing position of the multifunctional passage device 46, and pressing after 4 synchronous subsection preloading is achieved.
The embodiment of the invention adopts the scheme of synchronously preloading two sections of steel wires 466 and synchronously crimping, and solves the problems of poor follow-up performance and incapability of accurate control in the fixed-length steel wire 466 crimping technology in the vertebra assembly of the existing multifunctional channel device 46. The possibility of winding and friction clamping stagnation of the steel wire 466 is avoided by adopting larger pulling force, and meanwhile, the final allowable preloading force is separated from the preloading pulling force, so that the dynamic adjustment of the final allowable preloading force can be realized, and the risk that the steel wire 466 needs larger preloading force when being wound and the larger preloading force exceeds the final allowable preloading force of the steel wire 466 cable is avoided; the synchronous preloading mode ensures that the pretightening force borne by the steel wires 466 is consistent at the same time, and the load borne by the vertebral components is the same after the compression of the steel wires 466 is completed, so that the responses made by the steel wires 466 are consistent when the same driving force is applied, and the existence of the pretightening force can ensure the following performance of the vertebral joint terminal.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of embodiments of the present invention is not limited to performing functions in the order illustrated or discussed, but may include performing functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. A steel wire preloading crimping device for achieving crimping of steel wires (466) of a multifunctional channel (46), characterized in that the steel wire preloading crimping device comprises a fixing structure, a mounting plate (70) and a plurality of preloading components (71) mounted on the mounting plate (70), wherein the fixing structure is fixedly connected with the mounting plate (70), the fixing structure is used for fixing the multifunctional channel (46), the preloading components (71) are used for preloading the steel wires (466), and the number of the preloading components (71) is equal to the number of the steel wires (466) of the multifunctional channel (46);
the preloading assembly (71) comprises a first loading cylinder (711), a second loading cylinder (712), a wire clamping structure (713) and a first guide rail (714), the first loading cylinder (711) and the second loading cylinder (712) extend along the same direction and are simultaneously mounted on the mounting plate (70), the wire clamping structure (713) is slidably connected to the first guide rail (714), the first guide rail (714) is arranged on the mounting plate (70), and the wire clamping structure (713) is used for clamping a steel wire (466);
a first telescopic rod (7111) of the first loading cylinder (711) is slidably connected with the wire clamp structure (713), a limiting piece (7112) is arranged on the first telescopic rod (7111), the limiting piece (7112) is matched with the first telescopic rod (7111) to drive the wire clamp structure (713) to slide towards a preset direction and tension a steel wire (466), and a second telescopic rod (7121) of the second loading cylinder (712) is fixedly connected with the wire clamp structure (713);
the first loading cylinder (711) is used for driving the wire clamp structure (713) to load the steel wire (466) in a primary tensile manner, and the second loading cylinder (712) is used for driving the wire clamp structure (713) to load the steel wire (466) in a secondary tensile manner, so that the tensile force applied to the steel wire (466) reaches an allowable value.
2. The wire preloading crimping apparatus of claim 1, wherein the clip structure (713) comprises a clamping portion (7131), a mounting seat (7132) and a first slider (7133), the clamping portion (7131) is fixedly connected with the mounting seat (7132), the clamping portion (7131) is used for clamping a wire (466), the mounting seat (7132) is fixedly connected with the first slider (7133), the first slider (7133) is slidably connected with the first guide rail (714);
the first telescopic rod (7111) penetrates through and is connected to the mounting base (7132) in a sliding mode, the limiting piece (7112) is located at the first end of the first telescopic rod (7111), the first end is an extending portion of the first telescopic rod (7111) after penetrating through the mounting base (7132), and the second telescopic rod (7121) is fixedly connected to the mounting base (7132).
3. The steel wire preload crimp apparatus according to claim 2, wherein the stop member (7112) is a nut, which is threadedly connected to the first telescopic rod (7111).
4. The wire preload crimp connection as claimed in claim 1, wherein the first cylinder block (7113) of the first loading cylinder (711) is mounted to the mounting plate (70) by a cylinder block (715), and the second cylinder block (7122) of the second loading cylinder (712) is mounted to the mounting plate (70) by a cylinder block;
the first loading cylinder (711) and the second loading cylinder (712) are arranged on the cylinder block (715) at intervals along the vertical direction.
5. The steel wire preloading crimping device of claim 4, wherein a first pressure regulating valve is installed on the first loading cylinder (711), a second pressure regulating valve is installed on the second loading cylinder (712), the first pressure regulating valve is used for regulating the air pressure of the first loading cylinder (711), the second pressure regulating valve is used for regulating the air pressure of the second loading cylinder (712), and the first pressure regulating valve and the second pressure regulating valve are independent of each other.
6. The steel wire preload crimping apparatus of claim 1, wherein said preload assemblies (71) are provided in 4, 4 said preload assemblies (71) being in an annular array on said mounting plate (70) relative to said multi-function channel (46);
wherein 4 of the first loading cylinders (711) share an air source and are driven simultaneously, and 4 of the second loading cylinders (712) share an air source and are driven simultaneously.
7. The steel wire preloading crimping apparatus of any one of claims 1 to 6, characterized in that, the fixing structure further comprises a positioning guide assembly (72), the positioning guide assembly (72) comprises a positioning structure (721) and a guide structure (722), the positioning structure (721) is connected with the guide structure (722);
the positioning structure (721) is detachably connected with the multifunctional passage device (46), the positioning structure (721) is used for installing and positioning the multifunctional passage device (46), the guide structure (722) is movably connected with the steel wire (466), and the guide structure (722) is used for guiding the steel wire (466).
8. The steel wire preloading crimping device of claim 7, wherein the positioning structure (721) comprises a positioning block (7211) and a positioning mandrel (7212), the positioning block (7211) is provided with a positioning hole (72111), the positioning mandrel (7212) is partially located in the positioning hole (72111), and the multifunctional channel (46) is sleeved on the positioning mandrel (7212).
9. The steel wire preloading crimping device of claim 8, characterized in that the positioning block (7211) is provided with an avoiding groove (72112), the guiding structure (722) is mounted on a groove wall of the avoiding groove (72112), the guiding structure (722) is a pulley, and the pulley is used for guiding the stretching direction of the steel wire (466) from the arrangement position of the multifunctional channel (46) to the position of the wire clamping structure (713); wherein, the number of the pulleys is the same as that of the steel wires (466) and corresponds to one another.
10. The steel wire preloading crimping device of claim 9, characterized in that, the pulley is provided with 4, the locating block (7211) is provided with two and symmetrically arranged;
two on locating piece (7211) dodge groove (72112) and form the V type jointly and be provided with 2, 2 dodge groove (72112) and have 4 cell walls, the pulley set up in cell wall to one-to-one, 4 the pulley is in crisscross setting in the axis direction of positioning core axle (7212).
11. The steel wire preloading crimping device of claim 10, wherein the fixing structure further comprises a workpiece positioning assembly (73), the workpiece positioning assembly (73) comprises a supporting block (731) and a supporting column (732), the supporting block (731) is fixedly connected with the top end of the supporting column (732), a through hole (7311) is formed in the supporting block (731), and the through hole (7311) is used for being sleeved on the steel tube (462) entering the multifunctional channel (46); the bottom end of the supporting column (732) is fixedly connected with the mounting plate (70).
12. The wire preload crimp apparatus of any one of claims 11, wherein the wire preload crimp apparatus further comprises a crimp assembly (74), the crimp assembly (74) being mounted to a mounting plate (70), the crimp assembly (74) being adapted to crimp a wire (466) onto a crimp head (75) of the multi-function channel (46).
13. The wire preload crimp apparatus of claim 12, wherein the crimp assembly (74) comprises an electric crimper (741), a second slider (742) and a second guide rail (743), the electric crimper (741) and the second slider (742) being fixedly connected, the second slider (742) and the second guide rail (743) being slidably engaged, the second guide rail (743) being disposed on the mounting plate (70);
the jaw of the electric pressing clamp (741) faces the pressing head (75), an upper pressing block (7411) and a lower pressing block (7412) are arranged in the jaw, the upper pressing block (7411) and the lower pressing block (7412) are used for pressing a steel wire (466) to the pressing head (75), and the second sliding block (742) and the second guide rail (743) are matched to drive the electric pressing clamp (741) to be close to or far from the pressing head (75).
14. The wire preload crimp apparatus of claim 13, wherein the crimp assembly (74) further comprises a control plate (744) and a mechanical direction valve (745), the control plate (744) being fixedly connected to one side of the second slider (742), the mechanical direction valve (745) being fixedly connected to the mounting plate (70), the second slider (742) moving the control plate (744), a sliding pressure plate (7451) of the mechanical direction valve (745) abutting the control plate (744), the sliding pressure plate (7451) effecting a state change in the movement of the control plate (744).
15. The wire preload crimping device according to claim 14, characterized in that said control plate (744) comprises a normal portion (7441) and a widened portion (7442), said sliding pressure plate (7451) being switchable between two states, said sliding pressure plate (7451) being in a first state when said sliding pressure plate (7451) abuts said widened portion (7442); when the sliding platen (7451) abuts against the normal portion (7441), the sliding platen (7451) is in a second state;
when the sliding platen (7451) is in a first state, the first loading cylinders (711) are both activated;
when the sliding platen (7451) is in the second state, the second loading cylinders (712) are both activated and the first loading cylinders (711) are both deactivated or deactivated to move the stop (7112) away from the cleat feature (713).
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