Quick change mechanism and method for head turning die

Abstract

The invention relates to the technical field of flat wire motor stator production, in particular to a quick-change mechanism and method for a torsion head die. The quick-change mechanism comprises a plurality of layers of torsion head dies, a bearing assembly and a die transplanting library. The bearing assembly comprises a central bearing and a plurality of layers of die bearings; a driving convex piece is arranged on the lower surface of the mold bearing; the driving mechanism is provided with a driving groove embedded with the driving protruding piece. Fixing holes are formed in the side surfaces of the mold bearings; external bolts are inserted into the fixing holes, and the multiple layers of mold bearings are connected into a whole; the mold transplanting warehouse comprises N layers of translation modules and lifting modules; the N layers of translation modules are mounted on the lifting module; and the translation module is provided with a fixing groove matched with a driving convex piece of the mold bearing. According to the invention, a group of bearing assemblies are additionally arranged below the head-turning dies, and the head-turning dies which are originally arranged layer by layer are all arranged on the bearing assemblies, so that the head-turning dies become a whole, and the head-turning dies and the bearing assemblies are replaced together during remodeling.

Description

Technical Field

[0001] The invention relates to the technical field of flat wire motor stator production, and in particular to a twist head mold quick-change mechanism and method. Background Art

[0002] Flat wire motors are usually composed of stators, rotors, reducers, etc., and the stator of flat wire motors is one of the core components of flat wire motors. The stator is the stationary part of the motor, usually composed of a coil wound with copper wire, and is installed in the motor housing and fixed. Its main function is to generate a magnetic field, drive the rotor to rotate, and complete the operation of the motor. The main function of the flat wire motor stator is to generate a magnetic field, which can be a constant DC magnetic field or a variable AC magnetic field. When the current passing through the stator coil changes, the magnetic flux in the conductor will change, which will affect the shape of the magnetic field, and the shape of the magnetic field determines the direction and speed of rotation of the rotor. The magnetic field generated in the stator interacts with the magnetic field in the rotor, causing the rotor to rotate under the action of torque.

[0003] In the production and processing of flat wire motor stators, flat wire twisting molds are required.

[0004] In the prior art, the twist head mold is changed by installing and disassembling layer by layer, and the change time is about 30 minutes. It requires two groups of people to operate the change. At the same time, the installation of the mold requires diagonal tightening of bolts and the tightening torque has high requirements. The technical level of the mold installer is high. The positioning and concentricity of the mold depend on the accuracy of the driving mechanism of the equipment, and the interchangeability is poor.

[0005] The new energy flat wire stators are updated faster and the cost control is getting lower and lower. Usually one production line can be compatible with multiple products at the same time. The changeover time requirements are getting shorter and shorter. Traditional manual disassembly and changeover can no longer meet the new market demand. Summary of the invention

[0006] In order to solve the above technical problems, the present invention proposes a twist head mold quick change mechanism and method. The present invention adds a set of bearing assemblies under the twist head mold. The original layers of twist head molds are all installed on the bearing assemblies, so that the twist head mold becomes a whole. When changing the mold, the twist head mold and the bearing assembly can be replaced together. At the same time, the mold transfer warehouse is used in conjunction with the transport clamp to realize a fully automatic quick change process. The technical solution of the present invention is implemented as follows: The first aspect of the present invention provides a twist head mold quick change mechanism, the twist head mold quick change mechanism includes a plurality of layers of twist head molds; Also included are bearing assemblies and a mold transfer library; The bearing assembly includes a center bearing and several layers of mold bearings; A plurality of layers of the mold bearings are sequentially arranged on the outside of the center bearing along the radial direction; Several layers of the twist head molds are respectively connected to several mold bearings; The lower surface of each layer of the mold bearing is provided with a driving protrusion; The driving mechanism is provided with a driving groove which engages with the driving protrusion; The driving protrusions of the mold bearings of the plurality of layers are on the same horizontal plane; A fixing hole is arranged on the side of each layer of the mold bearing; The fixing holes of the mold bearings of the several layers are on the same horizontal plane; The fixing hole is used for inserting an external pin and connecting several layers of the mold bearings into a whole; The mold transfer library includes N layers of translation modules and lifting modules; The N layers of translation modules are installed on the lifting modules; each layer of the translation modules is provided with a fixing groove which cooperates with the driving protrusions of the mold bearings of several layers.

[0007] Preferably, the driving protrusions of the mold bearings of several layers are arranged in a cross shape on the same horizontal plane.

[0008] Preferably, on each layer of the mold bearing, the number of the fixing holes is at least 2.

[0009] Preferably, it also includes a carrying clamp; The carrying clamp comprises a clamping portion and a fixing latch assembly; The fixed latch assembly comprises a latch; The latch is used for inserting into the fixing hole.

[0010] Preferably, the fixed latch assembly further comprises a pushing unit; The pushing unit is used to drive the latch to move in a horizontal direction.

[0011] Preferably, it also includes a fixed motor; The number of the fixed motors is 4; The fixed motors are respectively arranged at the four corners of a cross structure formed by the driving grooves on the driving mechanisms of several layers; An extendable fixed protrusion is provided on the output shaft of the fixed motor; The four corners of the cross structure formed by the driving protrusions on the mold bearings of several layers are also provided with fixed concave blocks.

[0012] The second aspect of the present invention provides a method for quick-changing a twist mold, the method comprising the following steps: S1, manually or mechanically inserting external pins into the fixing holes of several layers of mold bearings on the positioning seat, so that all layers of mold bearings form an integral mold; at the same time, an empty layer in the N-layer translation module group in the mold transfer library corresponding to the integral mold to be placed is translated and extended outward; S2, the lifting module 13 controls the translation module described in S1 to rise and fall to a specified height, the carrying claw grabs the integral mold to the extended empty translation module, and the driving protrusions of the mold bearings of all layers in the integral mold are embedded in the fixed grooves on the upper surface of the translation module; the placement is completed; S3, the extended translation module is translated inward, and the translation module on which the integral mold to be transplanted is placed is translated outward and extended; S4, the lifting module 13 controls the translation module described in S3 to rise and fall to a specified height; the transporting claw grabs the integral mold to be transplanted to the positioning seat; the driving protrusions of all layers of mold bearings in the integral mold to be transplanted are respectively embedded in the driving grooves of all layers of driving mechanisms in the positioning seat; S5, remove the external pins in the mold bearings of all layers of the overall mold in S4; complete the quick change of the overall mold.

[0013] Preferably, the external latch is arranged on the carrying clamp; the carrying clamp comprises a clamping portion and a pushing unit; The pushing unit is used to push the external latch into the fixing hole of each layer of the mold bearing in the integral mold.

[0014] The advantages of the present invention are as follows: Compared with the traditional manual replacement of the upper and lower mouthguards, the present invention adds a set of bearing components under the twist head mold, and installs the original molds layer by layer on the bearing components, so that the molds become a whole, and can be replaced together when changing the mold.

[0015] In the present invention, all the twisting head moulds are mounted on the bearing assembly, and the positioning and concentricity of the twisting head moulds are determined by the driving protrusions below the bearing assembly, and are independent of the driving mechanism of the equipment.

[0016] The mold change is convenient, and the original clamping claws on the equipment can be used to realize automatic mold change. The mold change time can be controlled within 1 minute, and no human intervention is required.

[0017] The mold transfer warehouse of the present invention can place multiple groups of twist head molds of different specifications as needed, and the lifting module 13 and the multi-layer translation module cooperate with the transport clamps to complete the automated quick-change process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a twist head quick-change mechanism for a tooth guard, without a mold transplanting library; Figure 2 for Figure 1 Axial view of the embodiment shown, without the mold transplanting library; Figure 3 for Figure 1 The bottom view of the embodiment shown in the mold change state, without the mold transfer library; Figure 4 for Figure 3 A cross-sectional view of the drive mechanism in the structure shown; Figure 5 It is a schematic diagram of the structure of the carrying clamp in an embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure of a fixed latch assembly in a handling clamp shown; Figure 7 This is a schematic diagram of the structure of the mold transplanting library in an embodiment of the present invention; Figure 8 for Figure 7 The structural schematic diagram of the lifting module in the mold transplanting library shown; Fig. 9 for Figure 7 The structural schematic diagram of the first translation module in the mold transplanting library shown; Fig.10 for Figure 7 The schematic diagram of the structure of the first and second transfer mold groups in the mold transfer library is shown.

[0021] In the above drawings, the meanings of the reference numerals in each drawing are as follows: 1. Mold bearing; 2. Center bearing; 3. Driving protrusion; 4. Driving mechanism; 5. Driving groove; 6. Positioning seat; 7. Fix the motor; 7-1, fixing bump; 8. Fix the concave block; 9. Carrying jaws; 10. Fixing latch assembly; 11, latch; 12, propulsion unit; 13. Lifting module; 14, a first translation module; 15. The second translation module. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specific implementation methods are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0024] In the description of the specific implementation methods of the present invention, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0025] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0026] In the description of the embodiments of the present invention, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0027] The embodiments of the present invention will be described in more detail below by way of examples. It should be noted that the embodiments of the present invention are not limited to these examples.

[0028] like Figure 1-Figure 10 As shown, the present invention discloses a twist head mold quick-change mechanism, which includes several layers of twist head molds, bearing assemblies and a mold transfer library.

[0029] The bearing assembly includes a center bearing 2 and several layers of mold bearings 1.

[0030] Several layers of mold bearings 1 are sequentially arranged on the outside of the center bearing 2 along the radial direction.

[0031] Several layers of twist head molds are respectively connected to several mold bearings 1.

[0032] A driving protrusion 3 is provided on the lower surface of each layer of the mold bearing 1 .

[0033] The driving mechanism 4 of the positioning seat 6 is provided with a driving groove 5 which is engaged with the driving protrusion 3 .

[0034] The driving protrusions 3 of several layers of mold bearings 1 are on the same horizontal plane.

[0035] The side surface of each layer of the mold bearing 1 is provided with fixing holes.

[0036] The fixing holes of several layers of mold bearings 1 are on the same horizontal plane.

[0037] The fixing holes are used for inserting external pins and connecting several layers of mold bearings 1 into a whole.

[0038] The driving protrusions 3 of the mold bearings 1 of several layers are arranged in a cross shape on the same horizontal plane.

[0039] The mold transfer library includes a lifting module 13 , a first translation module 14 and a second translation module 15 .

[0040] The first translation module 14 and the second translation module 15 are installed on the lifting module 13; the first translation module 14 and the second translation module 15 are both provided with fixing grooves that cooperate with the driving protrusions of several layers of mold bearings.

[0041] In this embodiment, the bearing assembly composed of multiple groups of mold bearings 1 and center bearings 2 connects several layers of twist head molds into a whole. At the same time, each layer of twist head mold and mold bearing 1 can rotate independently. The driving mechanism 4 on the positioning seat 6 is a multi-layer design. Each layer of the driving mechanism 4 corresponds to a layer of mold bearing 1. The driving mechanism 4 is provided with a driving groove 5. The multi-layer driving grooves 5 are arranged in a cross shape on the horizontal plane, and cooperate with the cross-arranged driving protrusions 3 on the lower surface of the bearing assembly to achieve rapid positioning.

[0042] On the one hand, the cross-shaped design can achieve precise positioning, and on the other hand, it can also limit the twist head mold of each layer to prevent it from rotating.

[0043] In order to improve the efficiency and accuracy of quick change, the present invention designs a mold transfer library for quickly storing bearing assemblies. The lifting module 13 in the mold transfer library is used to control the lifting and lowering of the first translation module 14 and the second translation module 15 so as to cooperate with the transport clamp. The first translation module 14 and the second translation module 15 can both translate in the horizontal direction to avoid or cooperate with the transport path of the transport clamp.

[0044] In some embodiments, a fixed motor 7 is also included.

[0045] The number of fixed motors 7 is four.

[0046] The fixed motors 7 are respectively arranged at the four corners of the cross structure formed by the driving grooves 5 on the driving mechanisms 4 of several layers.

[0047] An extendable fixing protrusion 7 - 1 is arranged on the output shaft of the fixed motor 7 .

[0048] The four corners of the cross structure formed by the driving protrusions 3 on the mold bearings 1 of several layers are also provided with fixed recessed blocks 8.

[0049] When the twist head mold quick change mechanism falls on the positioning seat, in addition to the engagement of the driving protrusions of each layer of the twist head mold with the driving grooves 5 of each layer of the driving mechanism 4, the fixed motor 7 extends the fixed protrusion 7-1 to block the outermost fixed concave block 8 on the lower surface of the bearing assembly, thereby achieving the fixing of the bearing assembly. Figure 4 shown.

[0050] In some preferred embodiments, a carrying clamp 9 is further included.

[0051] The carrying clamp 9 comprises a clamping portion and a fixing latch assembly 10 .

[0052] The fixing latch assembly 10 comprises a latch 11 .

[0053] The latch pin 11 is used to be inserted into the fixing hole.

[0054] These embodiments of the present invention can use the transport clamp 9 on the existing assembly line, and only need to make some improvements to the transport clamp 9. The improvement effect is as follows: Figure 5 As shown, a fixed latch assembly 10 is added. The improvement cost is low, but the overall automation is greatly improved. During transportation, the transport clamp 9 itself can achieve the angular consistency of each layer of the twist head mold, otherwise the cross-shaped protrusion on the lower surface of the bearing assembly (the shape formed by the arrangement of the driving protrusions 3 of all the mold bearings 1) cannot be installed in the cross-shaped grooves on the positioning seat 6 during installation.

[0055] The deadbolt assembly 10 further includes a pushing unit 12 .

[0056] The push unit 12 is used to drive the latch 11 to move in the horizontal direction so as to be inserted into the fixing holes of the mold bearings 1. Figure 6 shown.

[0057] The operation method of this embodiment is as follows: The second aspect of the present invention provides a method for quick-changing a twist mold, the method comprising the following steps: S1, the push unit 12 of the transport clamp 9 drives the pin 11 to be inserted into the fixing holes of several layers of mold bearings 1 on the positioning seat 6, so that all layers of mold bearings 1 form an integral mold; at the same time, the first translation module 14 in the mold transfer library is extended to the outside in translation; at the same time, the fixed motor 7 retracts the fixed protrusion 7-1, and no longer blocks the outermost fixed concave block 8 on the lower surface of the bearing assembly, thereby realizing the release of the bearing assembly; the integral mold is not placed above the first translation module 14, and its function is to carry the disassembled integral mold; S2, the lifting module 13 controls the first translation module 14 to rise and fall to a specified height, the carrying clamp 9 grabs the integral mold to the extended first translation module 14, and the driving protrusions of all layer mold bearings 1 in the integral mold are embedded in the fixed grooves on the upper surface of the first translation module 14; placement is completed; S3, the first translation module is translated inward, and the second translation module 15 on which the integral mold to be transplanted is placed is translated outward and extended; S4, the lifting module 13 controls the second translation module 15 to rise and fall to the specified height; the transporting clamp 9 grabs the integral mold to be transplanted to the positioning seat; the driving protrusions of all layers of mold bearings 1 in the integral mold to be transplanted are respectively embedded in the driving grooves of all layers of driving mechanisms in the positioning seat; at the same time, the fixed motor 7 extends the fixed protrusion 7-1 to block the outermost fixed concave block 8 on the lower surface of the bearing assembly, thereby fixing the bearing assembly; S5, the pushing unit 12 of the carrying clamp 9 drives the latch 11 to retract from the fixing holes in the mold bearings 1 of all layers of the integral mold in S4; completing the quick change of the integral mold.

[0058] The integral mold referred to in the present invention refers to the integral structure formed by all layers of mold bearings 1 , the center bearing and all layers of twisting head molds under the action of the external latch 11 .

[0059] It should be pointed out that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A twist head mold quick change mechanism, comprising a plurality of layers of twist head molds; characterized in that: Also included are bearing assemblies and a mold transfer library; The bearing assembly includes a center bearing and several layers of mold bearings; A plurality of layers of the mold bearings are sequentially arranged on the outside of the center bearing along the radial direction; Several layers of the twist head molds are respectively connected to several mold bearings; The lower surface of each layer of the mold bearing is provided with a driving protrusion; The driving mechanism is provided with a driving groove which engages with the driving protrusion; The driving protrusions of the mold bearings of the plurality of layers are on the same horizontal plane; A fixing hole is arranged on the side of each layer of the mold bearing; The fixing holes of the mold bearings of the several layers are on the same horizontal plane; The fixing hole is used for inserting an external pin and connecting several layers of the mold bearings into a whole; The mold transfer library includes N layers of translation modules and lifting modules; The N-layer translation module is installed on the lifting module; Each layer of the translation module is provided with a fixing groove which cooperates with the driving protrusions of the mold bearings of several layers.

2. The twist head mold quick change mechanism according to claim 1, characterized in that: The driving protrusions of the mold bearings of the plurality of layers are arranged in a cross shape on the same horizontal plane.

3. The twist head mold quick change mechanism according to claim 1, characterized in that: On each layer of the mold bearing, the number of the fixing holes is at least 2.

4. The twist head mold quick change mechanism according to claim 1, characterized in that: Also included are handling grippers; The carrying clamp comprises a clamping portion and a fixing latch assembly; The fixed latch assembly comprises a latch; The latch is used for inserting into the fixing hole.

5. The twist head mold quick change mechanism according to claim 4, characterized in that: The fixed latch assembly also includes a pushing unit; The pushing unit is used to drive the latch to move in a horizontal direction.

6. The twist head mold quick change mechanism according to claim 2, characterized in that: Also included is a fixed motor; The number of the fixed motors is 4; The fixed motors are respectively arranged at the four corners of a cross structure formed by the driving grooves on the driving mechanisms of several layers; An extendable fixed protrusion is provided on the output shaft of the fixed motor; The four corners of the cross structure formed by the driving protrusions on the mold bearings of several layers are also provided with fixed concave blocks.

7. A method for quick changing of a twist head mold, characterized in that: The steps include: S1, manually or mechanically inserting external pins into the fixing holes of several layers of mold bearings on the positioning seat, so that all layers of mold bearings form an integral mold; at the same time, an empty layer in the N-layer translation module group in the mold transfer library corresponding to the integral mold to be placed is translated and extended outward; S2, the lifting module 13 controls the translation module described in S1 to rise and fall to a specified height, the carrying claw grabs the integral mold to the extended empty translation module, and the driving protrusions of the mold bearings of all layers in the integral mold are embedded in the fixed grooves on the upper surface of the translation module; the placement is completed; S3, the extended translation module is translated inward, and the translation module on which the integral mold to be transplanted is placed is translated outward and extended; S4, the lifting module 13 controls the translation module described in S3 to rise and fall to a specified height; the transporting claw grabs the integral mold to be transplanted to the positioning seat; the driving protrusions of all layers of mold bearings in the integral mold to be transplanted are respectively embedded in the driving grooves of all layers of driving mechanisms in the positioning seat; S5, remove the external pins in the mold bearings of all layers of the overall mold in S4; complete the quick change of the overall mold.

8. The method according to claim 7, characterized in that The external latch is arranged on the carrying clamp; the carrying clamp comprises a clamping portion and a pushing unit; The pushing unit is used to push the external latch into the fixing hole of each layer of the mold bearing in the integral mold.

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