Improved multi-coil stack lamination apparatus

Abstract

The application relates to an improved multi-series coil stacking and pressing equipment, which comprises a first die, a second die and a pressing power component. The first die comprises a top-opened forming groove, and a multi-series coil is placed in the forming groove. The second die comprises a pressing die, and the pressing die comprises a first pressing surface and two second pressing surfaces. The two second pressing surfaces are consistent in height and higher than the first pressing surface. The projection of the first pressing surface on the plane where the second pressing surfaces are located is located between the two second pressing surfaces. The pressing power component is in driving connection with the pressing die to drive the pressing die to press down, so that the first pressing surface and the second pressing surfaces press down the multi-series coil in the forming groove. The multi-series coil is pressed by the first pressing surface and the second pressing surface which are different in height on the second die. The mover coil with the shape of low in the middle and high on both sides is formed by one-time pressing. The structure of the pressing equipment is simplified, and the mover coil is not easily damaged.

Description

Technical Field

[0001] This application relates to the field of coil fixtures, and in particular to an improved multi-series coil stacking and pressing apparatus. Background Technology

[0002] Currently, with the development of various high-precision machining platforms, the demand for linear drive modules is also increasing. Linear motors, in particular, offer high motion accuracy and occupy little space, making them suitable for various precision equipment; therefore, the demand for linear motors is increasing year by year.

[0003] As an essential component of linear motors, the demand for mover coils is increasing. The size and specifications of mover coils vary depending on the load capacity required by the linear motor. Generally, mover coils are composed of multiple series-connected coils stacked in a staggered manner; for specific structures, please refer to [reference needed]. Figure 1 As shown.

[0004] During the production of the mover coil, multiple bundles of series-connected coils, stacked in a staggered manner, are placed into a pressing machine to press and fix them in place. Generally, to increase the electromagnetic force generated between the mover coil and the magnet, the mover coil needs to be made into a shape that is low in the middle and high on both sides. A schematic diagram can be found below. Figure 2 By partially enclosing a magnet, the generated electromagnetic force can be increased.

[0005] In related technologies, the pressing equipment includes an upper pressing mold and a lower pressing mold. After the upper pressing mold presses down to press multiple series coils together, the lower pressing mold lifts up and pushes the opposite two edges of the multiple series coils to fold the edges of the multiple series coils to obtain the desired moving coil shape.

[0006] However, the related technologies require the pressing equipment to apply force to multiple series-connected coils twice. This pressing equipment needs multiple power units and pressing molds, resulting in a complex structure. Furthermore, the use of the pressing equipment requires calibrating multiple movement positions, making the calibration process cumbersome. Additionally, in these technologies, the moving coil is ultimately formed by folding. During this folding process, wire breakage may occur at the folding point, negatively impacting the quality of the finished moving coil. Summary of the Invention

[0007] This application provides an improved multi-series coil stacking and pressing device to solve the technical problem that the pressing device in the related art has a complex structure and is prone to damage to the moving coil during pressing.

[0008] An improved multi-series coil stacking and pressing apparatus, comprising:

[0009] A first mold, the first mold including a forming groove with an opening at the top, wherein multiple series-connected coils are placed in the forming groove;

[0010] The second mold includes a pressing mold, which includes a first pressing surface and two second pressing surfaces. The two second pressing surfaces have the same height and are higher than the first pressing surface. The projection of the first pressing surface onto the plane containing the second pressing surfaces is located between the two second pressing surfaces.

[0011] A pressing power component is connected to the pressing mold to drive the pressing mold to press down, so that the first pressing surface and the second pressing surface extend into the forming groove to press down the multi-series coil.

[0012] In some embodiments, the second mold further includes a mounting bracket, and the power drive component is driven to the mounting bracket;

[0013] The pressing mold includes a first forming mold, which is elastically connected to the mounting frame, and the elastic movement direction of the first forming mold is set in the vertical direction. The bottom surface of the first forming mold is the first pressing surface.

[0014] In some embodiments, the first molding die further includes a limiting surface, which is higher than the first pressing surface and is adapted to abut against the first mold to limit the minimum distance between the first pressing surface and the bottom surface of the molding groove.

[0015] In some embodiments, the pressing mold further includes two second forming molds, both of which are fixed to the mounting bracket. The two second forming molds are located on opposite sides of the first forming mold, and the bottom surface of the second forming mold is the second pressing surface.

[0016] In some embodiments, the first mold includes:

[0017] The base, wherein the molding groove is disposed on the base;

[0018] A support plate is connected to the wall of the forming groove, forming the bottom of the forming groove, and is used to support the multi-series coils.

[0019] In some embodiments, the support plate is elastically disposed on the base, and the elastic movement direction of the support plate is arranged in the vertical direction.

[0020] In some embodiments, the base includes:

[0021] Base plate;

[0022] Two enclosure panels are arranged opposite each other and both are fixed to the base plate;

[0023] Two movable side plates are arranged opposite each other and are elastically set on the base plate. The elastic sliding direction of the movable side plates is set in the vertical direction. The two movable side plates and the two surrounding plates together form the groove wall of the forming groove. The receiving plate is fixed to the movable side plates.

[0024] In some embodiments, the first mold further includes a positioning component, the positioning component comprising:

[0025] Multiple positioning pieces are spaced apart and each positioning piece passes through the support plate.

[0026] A connecting plate is elastically disposed on the support plate, and one end of each of the plurality of positioning pieces extending below the support plate is connected to the connecting plate.

[0027] In some embodiments, the positioning component further includes a guide block connected to the connecting plate, the guide block being elastically disposed on the base, and the elastic movement direction of the guide block being vertical.

[0028] In some embodiments, the second mold further includes a pushing surface that is higher than the first pressing surface, and when the guide block is in its highest state, the second mold is adapted to press the guide block down through the pushing surface.

[0029] The beneficial effects of the technical solution provided in this application include:

[0030] This application provides a multi-series coil stacking and pressing device. When pressing multiple series coils to create a moving coil, the multi-series coil is placed in the forming groove of a first mold. A second mold moves towards the first mold under the drive of a pressing power component. The first and second pressing surfaces of the second mold press down on the multi-series coil. Due to the higher height of the second pressing surface compared to the first pressing surface, and the positional relationship between the first pressing surface and the two second pressing surfaces, the first pressing surface first presses down on the middle portion of the multi-series coil, and then the two second pressing surfaces press down on the opposite edges of the multi-series coil to complete the pressing step. The height relationship between the first and second pressing surfaces ensures that the middle portion of the multi-series coil is pressed down more than the edges, forming a moving coil with a lower middle and higher sides in a single pressing operation. This simplifies the structure of the pressing device, facilitates calibration before pressing, and eliminates the need to bend the multi-series coil, thus greatly reducing the chance of broken wires in the formed moving coil and improving the pressing quality. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of multiple series-connected coils provided in an embodiment of this application;

[0033] Figure 2 A schematic diagram of the moving coil provided in an embodiment of this application;

[0034] Figure 3 A schematic diagram of the improved multi-series coil stacking and pressing apparatus provided in the embodiments of this application;

[0035] Figure 4 A schematic diagram of the first mold and the second mold provided for embodiments of this application;

[0036] Figure 5 Front views of the first mold and the second mold provided for embodiments of this application;

[0037] Figure 6 A schematic diagram of the second mold provided in an embodiment of this application;

[0038] Figure 7 A side view of the second mold provided in an embodiment of this application;

[0039] Figure 8 A schematic diagram of the first mold provided in an embodiment of this application;

[0040] Figure 9 A partial cross-sectional view of the first mold provided in an embodiment of this application;

[0041] Figure 10 A schematic diagram of the positioning component provided in an embodiment of this application;

[0042] Figure 11 A schematic diagram showing the contact between the pushing surface and the guide block in an embodiment of this application;

[0043] Figure 12 A schematic diagram showing the first pressing surface contacting multiple series coils, provided in an embodiment of this application;

[0044] Figure 13 A schematic diagram showing the relative positions of the first molding die and the mounting bracket provided in the embodiments of this application when there is no longer any relative movement.

[0045] Figure 14 A schematic diagram showing the second molding die contacting multiple series coils, provided in an embodiment of this application;

[0046] Figure 15 This is a schematic diagram of the completed pressing process provided in an embodiment of this application.

[0047] In the diagram: 1. First mold; 11. Base; 111. Base plate; 112. Enclosure plate; 113. Movable side plate; 1131. Limiting protrusion; 114. Second guide rod; 115. Second elastic element; 12. Bearing plate; 13. Positioning assembly; 131. Positioning piece; 132. Connecting plate; 133. Guide block; 133a. Limiting groove; 134. Third elastic element; 1a. Forming groove; 1b. Wire groove; 2. Second mold; 21. Mounting frame; 22. Pressing mold; 221. First forming mold; 221a. First pressing surface; 221b. Limiting surface; 221c. Pushing surface; 222. Second forming mold; 222a. Second pressing surface; 223. First guide rod; 224. First elastic element; 3. Pressing power element; 4. Machine base; a. Multi-series coil; b. Moving coil. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] This application provides an improved multi-series coil stacking and pressing device. This device presses multiple series coils together using a first pressing surface and a second pressing surface of different heights on a second mold. A moving coil with a lower center and higher sides can be formed in a single press, simplifying the structure of the pressing device and reducing the risk of damage to the moving coil. This application solves the technical problem in related technologies where pressing devices have complex structures and are prone to damaging the moving coil during pressing.

[0050] Reference Figure 3 and Figure 4 An improved multi-series coil stacking and pressing device includes a machine base 4, a first mold 1, a second mold 2, and a pressing power component 3. The first mold 1 is fixed on the machine base 4, and the second mold 2 is located directly above the first mold 1. The fixed end of the pressing power component 3 is fixed to the machine base 4, and the driving end of the pressing power component 3 is fixed to the second mold 2, thereby driving the second mold 2 to move vertically, causing the second mold 2 to move closer to or away from the first mold 1. The pressing power component 3 includes a hydraulic cylinder.

[0051] Reference Figure 4 and Figure 11 The first mold 1 includes a forming groove 1a with an open top. Multiple series coils a are placed in the forming groove 1a and supported by the bottom of the forming groove 1a. Specifically, the forming groove 1a is a square groove to accommodate the shape of the multiple series coils a. After the multiple series coils a are placed in the forming groove 1a, the length direction of the multiple series coils a is consistent with the length direction of the forming groove 1a. The circumferential sides of the multiple series coils a are in contact with the groove wall of the forming groove 1a. Therefore, when the multiple series coils a are pressed down, the multiple series coils a are not easily deformed laterally due to the constraint of the groove wall of the forming groove 1a.

[0052] Reference Figures 4-7 The second mold 2 includes a pressing mold 22, which includes a first pressing surface 221a and two second pressing surfaces 222a. The two second pressing surfaces 222a have the same height and are higher than the first pressing surface 221a. The projection of the first pressing surface 221a onto the plane containing the second pressing surfaces 222a is located between the two second pressing surfaces 222a. When the second mold 2 is pressed down by the pressing power, the first pressing surface 221a and the second pressing surface 222a of the pressing mold 22 extend into the forming groove 1a one after another, and press down the multi-series coil a in the forming groove 1a one after another.

[0053] Reference Figures 4-7 Specifically, the length directions of the first pressing surface 221a and the second pressing surface 222a are both consistent with the length direction of the forming groove 1a, and the first pressing surface 221a and the second pressing surface 222a are arranged in the width direction of the forming groove 1a. When pressing down the multi-series coil a, the first pressing surface 221a first contacts the multi-series coil a and presses down the middle part of the multi-series coil a in the width direction. As the first pressing surface 221a is pressed down, the second pressing surface 222a descends to contact the multi-series coil a and presses down on the two opposite edges of the multi-series coil a. It can be understood that the pressing depth of the first pressing surface 221a on the multi-series coil a is greater than the pressing depth of the second pressing surface 222a on the multi-series coil a. Therefore, the multi-series coil a can be pressed into the shape of a moving coil b that is low in the middle and high on both sides.

[0054] This configuration simplifies the structure of the pressing equipment by using a single pressing power component 3 and requiring only one pressing operation to complete the forming process of the moving coil b. It also facilitates the calibration of the pressing equipment. Furthermore, since the forming process of the moving coil b does not involve bending multiple series-connected coils a, the formed moving coil b is less prone to coil damage defects, thus improving the pressing quality.

[0055] Reference Figures 4-7Furthermore, the lengths of the first pressing surface 221a and the second pressing surface 222a are both consistent with the length of the forming groove 1a, and the sum of the widths of the first pressing surface 221a and the two second pressing surfaces 222a is equal to the width of the forming groove 1a. This ensures that the upper surfaces of multiple series coils a can be pressed down, improving the quality of the pressing and forming process.

[0056] Reference Figures 4-7 Specifically, the second mold 2 further includes a mounting frame 21, which is fixed to the drive end of the pressing power component 3, and the pressing mold 22 is connected to the mounting frame 21. The pressing mold 22 includes a first forming mold 221, which is elastically connected to the mounting frame 21, and the elastic movement direction of the first forming mold 221 is vertical. The bottom surface of the first forming mold 221 is the first pressing surface 221a.

[0057] Reference Figures 12-13 With this configuration, when the multi-series coil a is pressed down, the first forming mold 221 descends with the mounting frame 21. Initially, the first pressing surface 221a of the first forming mold 221 contacts the upper surface of the multi-series coil a. As the mounting frame 21 descends further, the first forming mold 221 moves upward relative to the mounting frame 21 and gradually presses against the upper surface of the multi-series coil a. Therefore, hard collisions are avoided when the first forming mold 221 contacts the multi-series coil a, thus reducing the possibility of the first forming mold 221 damaging the multi-series coil a and improving the forming quality.

[0058] It should be noted that even though the first pressing surface 221a can move upward relative to the mounting bracket 21 with the first molding die 221, the highest position of the first pressing surface 221a is still lower than the second pressing surface 222a. In addition, the height difference between the first pressing surface 221a and the second pressing surface 222a when the first pressing surface 221a is at its highest point is the height difference between the middle part and the edge part of the molded moving coil b.

[0059] Reference Figure 6 and Figure 7Specifically, the pressing mold 22 includes multiple first guide rods 223 and multiple first elastic elements 224, with the length directions of the first guide rods 223 and the first elastic elements 224 both arranged vertically. Each of the multiple first guide rods 223 passes through a mounting frame 21 and is fixed to the first forming mold 221. The two ends of each of the multiple first elastic elements 224 are connected to the mounting frame 21 and the first forming mold 221, respectively. Under the guidance of the first guide rods 223, the first forming mold 221 is more stable when moving relative to the mounting frame 21, and is less prone to skewing. When the first forming mold 221 rises relative to the mounting frame 21, the first elastic elements 224 are compressed. Therefore, when the first forming mold 221 presses down on the multi-series coil a, the downward pressure applied to the multi-series coil a gradually increases under the action of the first elastic elements 224, facilitating the gradual compression of the multi-series coil a. In this embodiment, the first elastic element 224 includes a spring, and preferably, the first elastic element 224 can be sleeved on the first guide rod 223 to ensure the deformation direction of the first elastic element 224.

[0060] Reference Figure 6 and Figure 7 Specifically, the pressing mold 22 also includes two second forming molds 222, both of which are fixed to the mounting bracket 21 by bolts, with the first forming mold 221 located between the two second forming molds 222. The bottom surface of the second forming mold 222 is the second pressing surface 222a. When the first pressing surface 221a of the first forming mold 221 extends into the forming groove 1a, the second pressing surface 222a of the second forming mold 222 gradually extends into the forming groove 1a and presses down the multi-series coil a.

[0061] Reference Figure 8 Optionally, the first mold 1 includes a base 11 and a support plate 12. A forming groove 1a is formed on the top surface of the base 11. The support plate 12 is connected to the groove wall of the forming groove 1a, and the support plate 12 forms the bottom of the forming groove 1a. The support plate 12 is used to receive multiple series coils a.

[0062] Reference Figures 6-8 Furthermore, the first molding die 221 also includes a limiting surface 221b. The height of the limiting surface 221b is higher than that of the first pressing surface 221a. As the first molding die 221 descends, the limiting surface 221b can contact the top surface of the base 11, thereby limiting the further descent of the first molding die 221 relative to the base 11. This limits the length of the first molding die 221 extending into the molding groove 1a, that is, limits the distance between the first pressing surface 221a and the bottom of the molding groove 1a.

[0063] This configuration limits the pressing depth of the first molding die 221 onto the multi-series coil a, preventing damage caused by excessive pressing. Furthermore, since the second molding die 222 is fixed to the mounting bracket 21, the depth to which the second molding die 222 extends into the molding groove 1a is also limited, similarly controlling the pressing depth of the second molding die 222 onto the multi-series coil a.

[0064] In this embodiment, the first molding die 221 is elastically disposed on the mounting frame 21. When the first molding die 221 presses the multi-series coil a and the first molding die 221 no longer moves relative to the mounting frame 21, the first molding die 221 descends together with the mounting frame 21 to press down the multi-series coil a. At this time, when the limiting surface 221b of the first molding die 221 abuts against the top surface of the base 11, the first molding die 221 is pressed down into place and no longer presses down on the multi-series coil a, thus avoiding damage to the multi-series coil a due to excessive pressing.

[0065] Reference Figure 8 , Figure 9 and Figure 11 In this configuration, the support plate 12 is elastically connected to the base 11, and the elastic movement direction of the support plate 12 is vertically oriented, allowing it to move elastically up and down within the forming groove 1a. This arrangement ensures that when the first pressing surface 221a contacts the multi-series coil a, the support plate 12 is pressed down and elastically descends, preventing a hard collision between the first pressing surface 221a and the multi-series coil a, thus reducing the possibility of damage to the multi-series coil a. In this embodiment, both the support plate 12 being elastically positioned on the base 11 and the first forming mold 221 being elastically positioned on the mounting frame 21 are simultaneously arranged.

[0066] Reference Figure 8 and Figure 9 In this embodiment, the base 11 includes a base plate 111, two surrounding plates 112, and two movable side plates 113. The two surrounding plates 112 are arranged opposite each other and are both fixed to the base plate 111 by bolts. The two movable side plates 113 are arranged opposite each other and are elastically disposed on the base plate 111, with the elastic sliding direction of the movable side plates 113 being arranged vertically. The two movable side plates 113 and the two surrounding plates 112 together form the groove wall of the forming groove 1a. The bearing plate 12 is fixed to the movable side plates 113 so as to move up and down with the movable side plates 113.

[0067] With this configuration, after the multi-series coil a is placed on the support plate 12, the circumferential sides of the multi-series coil a are in contact with the groove wall of the forming groove 1a, that is, in contact with the side of the surrounding plate 112 or the movable side plate 113. The support plate 12 is fixed to the movable side plate 113, and moves together with the movable side plate 113. The side of the multi-series coil a that contacts the movable side plate 113 does not rub against the movable side plate 113. Therefore, during the pressing process, the multi-series coil a is not easily damaged by wear.

[0068] Reference Figure 8 and Figure 9 Specifically, the base 11 also includes multiple second guide rods 114 and multiple second elastic elements 115, with the length directions of the second guide rods 114 and the second elastic elements 115 both vertically arranged. Second guide rods 114 are threaded through each movable side plate 113, and the second guide rods 114 are fixed to the base plate 111 by bolts, thereby limiting the movement direction of the movable side plate 113 and the support plate 12, making the up-and-down movement of the support plate 12 more stable. The two ends of the second elastic elements 115 are fixed to the base plate 111 and the movable side plate 113 respectively. When the movable side plate 113 and the support plate 12 are pressed down, the second elastic elements 115 are compressed. When the compression deformation of the second elastic elements 115 is at its maximum, the support plate 12 is in its lowest state. Afterward, the first forming mold 221 continues to descend, thus performing the pressing process on the multi-series coils a on the support plate 12. In this embodiment, the second elastic element 115 includes a spring, and multiple second elastic elements 115 are respectively sleeved on the second guide rod 114 to prevent the second elastic element 115 from deflecting when deformed.

[0069] In this embodiment, the limiting surface 221b of the first molding die 221 contacts the top surface of the movable side plate 113 to limit the distance between the first pressing surface 221a and the bearing plate 12, thereby controlling the pressing depth of the multi-series coil a.

[0070] Reference Figures 12-15 Specifically, when the first forming mold 221 descends, the first pressing surface 221a first contacts the multi-series coil a. As the first forming mold 221 gradually descends, it rises relative to the mounting base while the support plate 12 is pressed down. This continues until the first forming mold 221 no longer moves elastically relative to the mounting frame 21, and the support plate 12 is at its lowest position. At this point, the first pressing surface 221a presses firmly against the multi-series coil a. As the mounting frame 21 descends further, the first forming mold 221 descends accordingly, pressing down on the multi-series coil a to perform the coil pressing operation. This continues until the limiting surface 221b of the first forming mold 221 contacts the top surface of the movable side plate 113, at which point the first forming mold 221 can no longer descend relative to the support plate 12, thus completing the pressing process of the multi-series coil a.

[0071] Reference Figures 9-11The first mold 1 further includes a positioning assembly 13, which includes a connecting plate 132 and multiple positioning pieces 131. The multiple positioning pieces 131 are arranged at intervals along the length of the forming groove 1a, and all of them pass through the support plate 12. The connecting plate 132 is located below the support plate 12 and is elastically connected to it. The ends of the multiple positioning pieces 131 that pass through to the bottom of the support plate 12 are fixed to the connecting plate 132. The elastic movement direction of the connecting plate 132 relative to the support plate 12 is vertical.

[0072] Among them, the multi-series coil 'a' is composed of multiple turns of coils connected in series and stacked in a staggered manner. Each turn of the coil is in the shape of a ring, therefore the multi-series coil 'a' includes multiple ring holes. When pressing the multi-series coil 'a' into shape, it is necessary to maintain the position of the multiple turns of coil.

[0073] When the multi-coil series a is placed into the forming groove 1a, each annular hole of the multi-coil series a is fitted with a positioning piece 131. The positioning piece 131 ensures that the multi-coil structure of the multi-coil series a does not become skewed, thereby improving the pressing quality. When pressing down the multi-coil series a, since the connecting plate 132 is elastically connected to the bearing plate 12, multiple positioning pieces 131 are pressed down simultaneously, avoiding any impact of the positioning pieces 131 on the pressing process of the multi-coil series a.

[0074] It should be noted that when the positioning piece 131 and the connecting plate 132 are not pressed down, the length of the positioning piece 131 above the bearing plate 12 is greater than or equal to the thickness of the multi-series coil a, so as to position the multi-series coil a and limit the lateral displacement of the multi-series coil a when it is pressed, thereby improving the quality of the compression molding.

[0075] Reference Figures 9-11 In this embodiment, the positioning component 13 further includes guide blocks 133. There are two guide blocks 133, both of which are elastically connected to the base 11. The elastic movement direction of the guide blocks 133 is vertical. The guide blocks 133 are connected to the connecting plate 132, so the connecting plate 132 is elastically connected to the base 11 through the guide blocks 133.

[0076] Reference Figures 9-11In this embodiment, specifically, two guide blocks 133 are elastically connected to two movable side plates 113 respectively. The guide blocks 133 are slidably disposed on the movable side plates 113 in the vertical direction. The positioning assembly 13 also includes a third elastic element 134, the number of which corresponds to the number of guide blocks 133. The deformation direction of the third elastic element 134 is vertical, and both ends of the third elastic element 134 are connected to the movable side plate 113 and the guide blocks 133 respectively, so as to realize the elastic connection between the guide blocks 133 and the movable side plates 113. When the positioning piece 131 and the connecting plate 132 descend, the third elastic element 134 is gradually compressed, and after the pressing is completed, under the action of the restoring force of the third elastic element 134, the connecting plate 132 and the positioning piece 131 are driven to rise, so as to facilitate the positioning of the next multi-series coil a placed on the support plate 12. In this embodiment, the third elastic element 134 includes a spring.

[0077] Reference Figures 9-11 Specifically, the movable side plate 113 has a vertical sliding groove on its side, and the guide block 133 is slidably disposed within the sliding groove. A limiting protrusion 1131 is fixed to the bottom of the sliding groove, while the guide block 133 has a vertically oriented limiting groove 133a. As the guide block 133 slides within the sliding groove, the limiting protrusion 1131 slides within the limiting groove 133a. This restricts the sliding direction of the guide block 133, making its movement more stable.

[0078] Reference Figures 9-11 Furthermore, the third elastic element 134 is located within the limiting groove 133a, and both ends of the third elastic element 134 are connected to the limiting protrusion 1131 and the top wall of the limiting groove 133a, respectively. The third elastic element 134 deforms within the limiting groove 133a, which helps maintain the normal shape of the third elastic element 134. When the third elastic element 134 deforms, its own axis is not easily deflected under the action of the limiting groove 133a.

[0079] Reference Figure 6 , Figure 9 and Figure 11 Furthermore, the second mold 2 also includes a pushing surface 221c. In this embodiment, the pushing surface 221c is disposed on the first molding mold 221. As the first molding mold 221 descends, the pushing surface 221c contacts the guide block 133 and presses down the guide block 133. In this way, by pressing down the guide block 133, the connecting plate 132 and the positioning piece 131 are driven to descend, thereby avoiding the first molding mold 221 from directly contacting the positioning piece 131 and reducing the possibility of damaging the positioning piece 131.

[0080] Reference Figure 11In this embodiment, the pushing surface 221c is higher than the first pressing surface 221a. When the guide block 133 is in its highest state, the top surface of the guide block 133 is higher than the top surface of the base 11. When the first pressing surface 221a extends into the molding groove 1a and contacts the positioning piece 131, the pushing surface 221c contacts the top surface of the guide block 133. Preferably, when the positioning piece 131 is at its highest height relative to the support plate 12, the height difference between the top surfaces of the positioning piece 131 and the guide block 133 is the same as the height difference between the first pressing surface 221a and the pushing surface 221c, or is 1-2 mm larger than the height difference between the first pressing surface 221a and the pushing surface 221c.

[0081] With this configuration, the positioning piece 131 is driven to descend by the pushing surface 221c, and the positioning piece 131 can descend and descend with the first pressing surface 221a pressing the multiple series coils a. On the one hand, the positioning piece 131 is not easily deformed by the pressure of the first pressing surface 221a. On the other hand, the positioning piece 131 can continuously restrict the position of the multiple series coils a when they are pressed, so as to prevent the multiple series coils a from shifting laterally when they are pressed.

[0082] Reference Figure 8 Optionally, the molding groove 1a has a wire groove 1b in its wall, which provides a place for the wire ends of the multi-series coils a to be placed, thus avoiding pressure on the wire ends of the multi-series coils a. In this embodiment, the wire groove 1b is located on the inner side of the movable side plate 113.

[0083] The working process of this multi-series coil a-stacking and pressing device includes:

[0084] Reference Figures 11-15The multi-series coil a is placed into the forming groove 1a, and the positioning piece 131 positions the multi-series coil a. The second mold 2 is driven down by the pressing power component 3. The first forming mold 221 extends into the forming groove 1a first, and the pushing surface 221c of the second forming mold 222 contacts the guide block 133 before the first pressing surface 221a of the first forming mold 221 touches the positioning piece 131. As the first forming mold 221 continues to press down, the positioning piece 131 moves down synchronously without interfering with the movement of the first forming mold 221. After the first pressing surface 221a contacts the upper surface of the multi-series coil a, as the mounting bracket 21 presses down further, the first forming mold 221 rises relative to the mounting bracket 21, and the support plate 12 is also pressed down and falls. At this time, the first pressing surface 221a gradually increases the pressure applied to the multi-series coil a, avoiding damage to the multi-series coil a due to sudden excessive force. When the support plate 12 descends to its lowest position and the first forming mold 221 no longer moves relative to the mounting frame 21, the first forming mold 221 presses down on the multi-series coil a as the mounting frame 21 descends, thereby concave the middle part of the multi-series coil a. Subsequently, the two second forming molds 222 extend into the forming groove 1a as the mounting frame 21 descends and press down on the two edges of the multi-series coil a. Finally, when the limiting surface 221b of the first forming mold 221 contacts the movable side plate 113, the pressing operation is completed. Because the heights of the first pressing surface 221a and the second pressing surface 222a are different, the pressing depths of the first pressing surface 221a and the second pressing surface 222a on the multi-series coil a are different, resulting in a moving coil b that is low in the middle and high on both sides.

[0085] This application provides a multi-series coil a stacking and pressing device. When the pressing device presses multiple series coils a to produce a moving coil b, the multiple series coils a are placed in the forming groove 1a of the first mold 1. The second mold 2 moves toward the first mold 1 under the drive of the pressing power component 3. The first pressing surface 221a and the second pressing surface 222a of the second mold 2 press down on the multiple series coils a. Since the height of the second pressing surface 222a is higher than that of the first pressing surface 221a, and the positional relationship between the first pressing surface 221a and the two second pressing surfaces 222a, the first pressing surface 221a first presses down on the middle part of the multiple series coils a, and then the two second pressing surfaces 222a press down on the two opposite edges of the multiple series coils a to complete the pressing step of the multiple series coils a. The height relationship between the first pressing surface 221a and the second pressing surface 222a ensures that the middle portion of the multi-series coil a is pressed down to a greater extent than the edge portion, thus forming a moving coil b with a lower middle and higher sides in a single pressing operation. This simplifies the structure of the pressing equipment, facilitates calibration before pressing, and eliminates the need to bend the multi-series coil a, significantly reducing the likelihood of wire breakage in the formed moving coil b and improving the pressing quality.

[0086] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0087] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An improved multi-series coil stacking and pressing device, characterized in that, It includes: A first mold, the first mold including a forming groove with an opening at the top, wherein multiple series-connected coils are placed in the forming groove; The second mold includes a pressing mold, which includes a first pressing surface and two second pressing surfaces. The two second pressing surfaces have the same height and are higher than the first pressing surface. The projection of the first pressing surface onto the plane containing the second pressing surfaces is located between the two second pressing surfaces. A pressing power component is connected to the pressing mold to drive the pressing mold to press down, so that the first pressing surface and the second pressing surface extend into the forming groove to press down the multi-series coil; The second mold also includes a mounting frame, and the power drive component is driven to connect to the mounting frame; The pressing mold includes a first forming mold, which is elastically connected to the mounting frame, and the elastic movement direction of the first forming mold is set in the vertical direction. The bottom surface of the first forming mold is the first pressing surface. The pressing mold also includes two second forming molds, both of which are fixed to the mounting frame. The two second forming molds are located on opposite sides of the first forming mold, and the bottom surface of the second forming mold is the second pressing surface.

2. The improved multi-series coil stacking and pressing device according to claim 1, characterized in that, The first molding die further includes a limiting surface, which is higher than the first pressing surface and is adapted to abut against the first mold to limit the minimum distance between the first pressing surface and the bottom surface of the molding groove.

3. The improved multi-series coil stacking and pressing device according to claim 1, characterized in that, The first mold includes: The base, wherein the molding groove is disposed on the base; A support plate is connected to the wall of the forming groove, forming the bottom of the forming groove, and is used to support the multi-series coils.

4. The improved multi-series coil stacking and pressing device according to claim 3, characterized in that, The support plate is elastically disposed on the base, and the elastic movement direction of the support plate is set in the vertical direction.

5. The improved multi-series coil stacking and pressing device according to claim 3, characterized in that, The base includes: Base plate; Two enclosure panels are arranged opposite each other and both are fixed to the base plate; Two movable side plates are arranged opposite each other and are elastically set on the base plate. The elastic sliding direction of the movable side plates is set in the vertical direction. The two movable side plates and the two surrounding plates together form the groove wall of the forming groove. The bearing plate is fixed to the movable side plates.

6. The improved multi-series coil stacking and pressing apparatus according to claim 3, 4, or 5, characterized in that, The first mold further includes a positioning component, the positioning component comprising: Multiple positioning pieces are spaced apart and each positioning piece passes through the support plate. A connecting plate is elastically disposed on the support plate, and one end of each of the plurality of positioning pieces extending below the support plate is connected to the connecting plate.

7. The improved multi-series coil stacking and pressing device according to claim 6, characterized in that, The positioning component further includes a guide block, which is connected to the connecting plate and is elastically disposed on the base. The direction of the elastic movement of the block is vertical.

8. The improved multi-series coil stacking and pressing device according to claim 7, characterized in that, The second mold further includes a pushing surface, which is higher than the first pressing surface. When the guide block is in its highest state, the second mold is adapted to press down on the guide block through the pushing surface.

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