A mold structure and process for square nanocrystalline magnetic core

Abstract

The present application relates to the technical field of molds, and in particular to a mold structure and process for a square nanocrystalline magnetic core, which includes a first shaping piece and a second shaping piece, both of which are used to shape a plurality of magnetic cores; an expansion piece is inserted between the first shaping piece and the second shaping piece, and the expansion piece is used to expand a plurality of magnetic cores; two fixing pieces, the two fixing pieces are used to cooperate to clamp the two ends of a plurality of magnetic cores, and the fixing pieces are provided with a direction limiting bayonet for the first shaping piece and the second shaping piece to be inserted. The present application has the effect of improving the production efficiency of manufacturing square nanocrystalline magnetic cores.

Description

Technical Field

[0001] The present application relates to the technical field of molds, and in particular to a mold structure and process for a square nanocrystalline magnetic core. Background Art

[0002] Currently, nanocrystalline magnetic cores are widely used in the electronics industry due to their excellent magnetic properties. However, the commonly used manufacturing solution is to design a specific combination of molding parts to form a qualitative mold for square nanocrystalline magnetic cores.

[0003] The traditional square nanocrystalline magnetic core molding mold has obvious shortcomings, that is, it can only shape a single annular nanocrystalline magnetic core in a "one-to-one" manner, and cannot shape multiple annular nanocrystalline magnetic cores at the same time, which restricts the mass production process of square nanocrystalline magnetic cores, resulting in serious limitations on production efficiency and affecting the overall qualification rate of the product, making it impossible to achieve mass production of square nanocrystalline magnetic cores. Summary of the invention

[0004] In order to improve the production efficiency of manufacturing square nanocrystalline magnetic cores, the present application provides a mold structure and process for manufacturing square nanocrystalline magnetic cores.

[0005] The mold structure and process of a square nanocrystalline magnetic core provided in this application adopt the following technical solutions:

[0006] In the first aspect, a mold structure of a square nanocrystalline magnetic core includes a first shaping piece and a second shaping piece, wherein the first shaping piece and the second shaping piece are both used to shape a plurality of magnetic cores; an expansion piece is inserted between the first shaping piece and the second shaping piece, wherein the expansion piece is used to expand a plurality of magnetic cores; and two fixing pieces, wherein the two fixing pieces are used to cooperate in clamping the two ends of a plurality of magnetic cores, and the fixing pieces are provided with direction limiting snap-ons for plugging the first shaping piece and the second shaping piece.

[0007] By adopting the above technical scheme, during the expansion process, the first shaping member and the second shaping member are first plugged into the clamping position of a fixing member, and then multiple magnetic cores are initially inserted and fixed through the first shaping member and the second shaping member, and then the second fixing member is plugged and installed at the farthest end of the fixing member through the first shaping member and the second shaping member, so that the two fixing members clamp the two ends of the multiple magnetic cores, and finally the expansion member is inserted between the first shaping member and the second shaping member, so that the expansion member passes between the first shaping member and the second shaping member, driving the first shaping member and the second shaping member to move away from each other and expand the magnetic core, so that the magnetic core finally becomes a square state.

[0008] Optionally, the side surfaces of the expansion member used to abut against the first shaping member and the second shaping member are configured as guide slopes, and the side surfaces of the first shaping member and the second shaping member used to abut against the expansion member are correspondingly configured as inclined surfaces.

[0009] By adopting the above technical solution, the expansion of the expansion piece can be guided during the plugging process of the expansion piece by coordinating the guiding inclined surface of the expansion piece with the guiding inclined surfaces of the first shaping piece and the second shaping piece.

[0010] In a second aspect, a process for a square nanocrystalline magnetic core is provided, using the mold structure of the square nanocrystalline magnetic core as described above, and includes the following steps:

[0011] Step 1: assemble and fix the bottom fixing part, the first shaping part, and the second shaping part by using an automatic assembly unit;

[0012] Step 2: placing multiple magnetic cores and top fixing parts between the assembled first shaping parts and the second shaping parts through an automatic assembly unit;

[0013] Step 3: inserting the expansion piece between the first shaping piece and the second shaping piece through the automatic assembly unit;

[0014] Step 4: Place the shaped magnetic cores into a high temperature furnace for heat treatment;

[0015] Step 5: Soak the multiple magnetic cores that have been heat treated in curing glue;

[0016] Step 6: Place the soaked magnetic cores into a drying oven for drying.

[0017] Optionally, the automatic assembly unit includes an assembly component and an expansion component, the assembly component is used to assemble a fixing part, a first forming part, a second forming part and a plurality of magnetic cores, and the expansion component is used to install the expansion part.

[0018] By adopting the above technical solution, the fixing part, the first shaping part, the second shaping part and multiple magnetic cores are preliminarily assembled using an assembly component, and then the expanding part is installed between the first shaping part and the second shaping part through the expanding component to expand the magnetic core.

[0019] Optionally, the assembly component includes an assembly casing, a mounting platform is slidably provided on the side wall of the assembly casing, a lifting member is installed in the assembly casing, the mounting platform is fixed at the lifting end of the lifting member, a blanking member is installed on the top of the assembly casing, the blanking member is used to blank multiple magnetic cores and top fixing members, and a feeding member is provided on one side of the assembly casing, the feeding member is used to feed the first forming member and the second forming member.

[0020] By adopting the above technical solution, the fixing part at the bottom is first placed on the mounting table, and then the first shaping part and the second shaping part are installed in the fixing part through the feeding part for preliminary fixation, and then the mounting table is controlled to move up and down through the lifting part, so that the mounting table moves to the bottom of the blanking part. At this time, the blanking part assembles multiple magnetic cores onto the first shaping part and the second shaping part for fixation, and finally the fixing part at the top is installed to achieve the overall preliminary shaping installation.

[0021] Optionally, a positioning groove is formed on the top surface of the mounting platform, the shape of the positioning groove matches the shape of the fixing member, and the depth of the positioning groove is less than the height of the fixing member.

[0022] By adopting the above technical solution and setting the positioning groove, it is possible to facilitate the installation and positioning of the fixing member.

[0023] Optionally, the unloading part includes a unloading conveyor belt, which is installed on the top of the assembly housing, and a guide enclosure for guiding multiple magnetic cores is installed on the unloading conveyor belt, a unloading port is opened at the bottom of the guide enclosure, and an opening and closing part for opening and closing the unloading port is installed in the assembly housing.

[0024] By adopting the above technical solution, multiple magnetic cores are transported by a feeding conveyor belt. During the transportation process, the guide enclosure can guide the multiple magnets, and then the multiple magnetic suctions fall onto the first forming part and the second forming part through the feeding port and are fixed on them, thereby realizing the feeding part to feed the multiple magnetic cores.

[0025] Optionally, the first shaping member and the second shaping member are hingedly fixed, and a contraction spring is installed between the first shaping member and the second shaping member.

[0026] By adopting the above technical solution, the first shaping member and the second shaping member are connected by a hinged setting, so that the combined first shaping member and the second shaping member can be easily assembled, and the setting of the contraction spring can keep the first shaping member and the second shaping member in a retracted state with respect to each other, which is beneficial to the arrangement of multiple magnetic cores.

[0027] Optionally, the expansion component includes an expansion housing and an expansion pressing piece, and a fixing platform is fixedly mounted on the side wall of the expansion housing, and the fixing platform is used to fix the plurality of magnetic cores.

[0028] By adopting the above technical solution, during processing, the assembled multiple magnets are fixed by a fixing table, and then the expansion piece is grabbed by the expansion pressing piece and placed between the first shaping piece and the second shaping piece, and then the expansion piece is pressed by the expansion pressing piece to achieve the expansion of the magnetic core.

[0029] Optionally, the expansion pressing piece includes an expansion trackless cylinder installed in the expansion housing along the vertical direction, and a clamping claw cylinder is horizontally installed at the moving end of the expansion trackless cylinder, and the clamping end of the clamping claw cylinder is used to clamp and press the expansion piece.

[0030] By adopting the above technical solution, the expansion trackless cylinder drives the clamping cylinder to move up and down in the vertical direction, and the clamping cylinder clamps and presses the expansion part, thereby realizing the function of the expansion pressing part.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. In the process of expansion, firstly, the first shaping member and the second shaping member are plugged into the clamping position of a fixing member, and then multiple magnetic cores are initially inserted and fixed through the first shaping member and the second shaping member, and then the second fixing member is plugged and installed through the first shaping member and the second shaping member at the farthest end of the fixing member, so that the two fixing members clamp the two ends of the multiple magnetic cores, and finally, the expansion member is inserted between the first shaping member and the second shaping member, so that the expansion member passes between the first shaping member and the second shaping member, drives the first shaping member and the second shaping member to move away from each other and expands the magnetic core, so that the magnetic core finally becomes a square state;

[0033] 2. The setting of the automatic assembly unit can realize the expansion operation of multiple magnetic cores, greatly improving the working efficiency of magnetic core processing;

[0034] 3. The first shaping member and the second shaping member are connected by a hinged setting, so that the combined first shaping member and the second shaping member can be easily assembled, and the setting of the contraction spring can keep the first shaping member and the second shaping member in a retracted state with respect to each other, which is beneficial to the arrangement of multiple magnetic cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of a mold structure of a square nanocrystalline magnetic core in an embodiment.

[0036] Figure 2 It is a schematic diagram of the overall structure of an automatic assembly unit assembly component of a process for producing a square nanocrystalline magnetic core in an embodiment;

[0037] Figure 3 It is a schematic diagram of the overall structure of an expanded component of a process for producing a square nanocrystalline magnetic core according to an embodiment.

[0038] Figure 4 It is a schematic diagram of the overall structure of an automatic assembly unit assembly component of a square nanocrystalline magnetic core process in an embodiment from another perspective.

[0039] Figure 5It is a schematic diagram of a mold structure of a process for producing a square nanocrystalline magnetic core according to an embodiment.

[0040] Figure 6 It is a schematic diagram of the overall structure of an expanded component of a square nanocrystalline magnetic core process from another perspective in an embodiment.

[0041] Description of reference numerals:

[0042] 1. First shaping part; 2. Second shaping part; 3. Expanding part; 4. Fixing part; 5. Guide slope; 6. Inclined surface; 7. Assembly component; 71. Assembly housing; 72. Mounting table; 73. Lifting part; 74. Feed conveyor belt; 75. Feed telescopic cylinder; 76. Feed finger cylinder; 8. Expanding component; 81. Expanding housing; 83. Fixing table; 84. Guide shaping plate; 85. Expanding trackless cylinder; 86. Gripper cylinder; 9. Contraction spring; 10. Unloading conveyor belt; 11. Guide enclosure; 12. Opening and closing telescopic cylinder; 13. Opening and closing plate. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-6 This application is described in further detail.

[0044] In a first aspect, the present application discloses a mold structure of a square nanocrystalline magnetic core. Figure 1 A mold structure of a square nanocrystalline magnetic core includes a first shaping piece 1 and a second shaping piece 2, and both the first shaping piece 1 and the second shaping piece 2 are used to shape a plurality of magnetic cores.

[0045] An expansion piece 3 is inserted between the first forming piece 1 and the second forming piece 2, and the expansion piece 3 is used to expand the multiple magnetic cores; two fixing pieces 4 are used to cooperate to clamp the two ends of the multiple magnetic cores, and the fixing pieces 4 are provided with direction limiting snap-ons for the first forming piece 1 and the second forming piece 2 to be plugged in.

[0046] Furthermore, the side surfaces of the expansion member 3 for contacting with the first shaping member 1 and the second shaping member 2 are configured as guide slopes 5 , and the side surfaces of the first shaping member 1 and the second shaping member 2 for contacting with the expansion member 3 are correspondingly configured as inclined surfaces 6 .

[0047] In this embodiment, the first shaping member 1 and the second shaping member 2 are symmetrically arranged strip blocks made of iron block material. The surfaces of the two strip blocks facing each other are cut into guiding inclined surfaces 5, and the expansion member 3 is made of iron block material. After the first shaping member 1, the second shaping member 2 and the expansion member 3 are combined with each other, a combined block with an overall rectangular shape is formed.

[0048] The fixing member 4 is a hollow square block made of iron material, and the hollow cavity of the square block fits with the assembly block.

[0049] The coordinated arrangement of the guiding bevel 5 of the expansion piece 3 and the guiding bevel 5 of the first shaping piece 1 and the second shaping piece 2 can guide the expansion of the expansion piece 3 during the insertion of the expansion piece 3, so that the first shaping piece 1 and the second shaping piece 2 expand outward in stages along the vertical direction, thereby improving the stability of the expansion of multiple magnetic cores.

[0050] During the expansion process, the first shaping member 1 and the second shaping member 2 are first inserted into the clamping position of a fixing member 4, and then multiple magnetic cores are initially inserted and fixed through the first shaping member 1 and the second shaping member 2. Then, the second fixing member 4 is installed through the first shaping member 1 and the second shaping member 2 at the farthest end of the fixing member 4, so that the two fixing members 4 clamp the two ends of the multiple magnetic cores. Finally, the expansion member 3 is inserted between the first shaping member 1 and the second shaping member 2, so that the expansion member 3 passes between the first shaping member 1 and the second shaping member 2, driving the first shaping member 1 and the second shaping member 2 to move away from each other and expand the magnetic core, so that the magnetic core finally becomes a square state.

[0051] In a second aspect, the present application also discloses a process for a square nanocrystalline magnetic core, comprising the following steps:

[0052] Step 1: assemble and fix the bottom fixing member 4, the first shaping member 1, and the second shaping member 2 using an automatic assembly unit.

[0053] The first shaping member 1 and the second shaping member 2 are mounted on the fixing member 4 at the bottom by an automatic assembly unit to form a preliminary shaping so as to facilitate the installation of multiple magnetic cores.

[0054] Step 2: Place multiple magnetic cores and the top fixing member 4 between the assembled first forming member 1 and the second forming member 2 through an automatic assembly unit.

[0055] A plurality of magnetic cores are installed between the first shaping member 1 and the second shaping member 2 for preliminary fixation, and then the fixing member 4 at the top is installed on the top of the plurality of magnetic cores, the fixing member 4 at the top is preliminarily fixed by the first shaping member 1 and the second shaping member 2, and the magnetic cores are clamped by the fixing member 4 at the top and the fixing member 4 at the bottom.

[0056] Step 3: insert the expansion piece 3 between the first shaping piece 1 and the second shaping piece 2 through an automatic assembly unit.

[0057] By installing the expansion piece 3, the expansion of multiple magnetic cores is achieved. The fixing piece 4 located at the top and the fixing piece 4 located at the bottom can not only clamp the multiple magnetic cores, but also limit the movement of the first forming piece 1 and the second forming piece 2, thereby ensuring that under the action of the expansion piece 3, the first forming piece 1 and the second forming piece 2 cooperate to complete the expansion operation of the multiple magnetic cores.

[0058] Step 4: Place the multiple shaped magnetic cores into a high temperature furnace for heat treatment.

[0059] The magnetic core needs to be derusted before heat treatment. After the magnetic core enters the high-temperature furnace, the high-temperature furnace is filled with argon gas, and the high-temperature heating temperature is adjusted to 480 degrees to heat the magnetic core for 12 hours. After the heat treatment is completed, the core's furnace temperature needs to be greater than 300 degrees.

[0060] Step 5: Soak the multiple magnetic cores that have completed the heat treatment in curing glue.

[0061] Soak the heat-treated magnetic core in curing glue for 1 minute, drain and let it sit for 30 minutes.

[0062] Step 6: Place the soaked magnetic cores into a drying oven for drying.

[0063] The filtered magnetic core is placed in a drying oven and baked at 140 degrees for 10 hours. After that, the finished product is inspected and packaged.

[0064] Reference Figure 2 and Figure 3 The automatic assembly unit includes an assembly component 7 and an expansion component 8. The assembly component 7 is used to assemble the fixing part 4, the first forming part 1, the second forming part 2 and a plurality of magnetic cores, and the expansion component 8 is used to install the expansion part 3.

[0065] Reference Figure 2 and Figure 4 The assembly component 7 includes an assembly casing 71, a mounting platform 72 is slidingly provided on the side wall of the assembly casing 71, a lifting member 73 is installed in the assembly casing 71, the mounting platform 72 is fixed at the lifting end of the lifting member 73, a blanking member is installed on the top of the assembly casing 71, and the blanking member is used to blank multiple magnetic cores and the top fixing member 4, and a feeding member is provided on one side of the assembly casing 71, and the feeding member is used to feed the first forming member 1 and the second forming member 2.

[0066] The feeding part includes a feeding conveyor belt 74, which is arranged on one side of the assembly housing 71 and is used to convey the first shaping part 1 and the second shaping part 2. A feeding telescopic cylinder 75 is horizontally installed on one side of the feeding conveyor belt 74, and a feeding finger cylinder 76 is installed at the telescopic end of the feeding telescopic cylinder 75, and the feeding finger cylinder 76 is used to clamp the first shaping part 1 and the second shaping part 2.

[0067] Reference Figure 5 , in order to facilitate the clamping of the first shaping member 1 and the second shaping member 2. The first shaping member 1 and the second shaping member 2 are hingedly fixed, and a contraction spring 9 is installed between the first shaping member 1 and the second shaping member 2, and the elastic force direction of the contraction spring 9 is the same as the hinge rotation direction of the first shaping member 1 and the second shaping member 2. The lower end of the expansion member 3 is correspondingly provided with a avoidance adapted to the first shaping member 1 and the second shaping member 2.

[0068] The first forming part 1 and the second forming part 2 are connected by a hinged setting, so that the feeding finger cylinder 76 can conveniently clamp and assemble the first forming part 1 and the second forming part 2, and the setting of the contraction spring 9 can make the first forming part 1 and the second forming part 2 maintain a retracted state with each other, which is conducive to the sleeve installation of multiple magnetic cores.

[0069] Reference Figure 2 Specifically, in the present embodiment, the lifting member 73 can be a lifting cylinder, a rodless cylinder, etc. In the present embodiment, a rodless cylinder is preferably used. The rodless cylinder is vertically fixed in the assembly housing 71, and the moving end of the rodless cylinder is fixedly connected to the side wall of the mounting platform 72.

[0070] A positioning groove is formed on the top surface of the mounting platform 72 . The shape of the positioning groove matches the shape of the fixing member 4 , and the depth of the positioning groove is smaller than the height of the fixing member 4 .

[0071] Therefore, it is convenient to position and install the fixing member 4 at the bottom, and the first shaping member 1 and the second shaping member 2 can be fixed and installed through the installed fixing member 4 .

[0072] Reference Figure 4 The unloading parts include an unloading conveyor belt 10, which is installed on the top of the assembly housing 71, and a guide enclosure 11 for guiding multiple magnetic cores is installed on the unloading conveyor belt 10, a unloading port is opened at the bottom of the guide enclosure 11, and an opening and closing part for opening and closing the unloading port is installed in the assembly housing 71.

[0073] Furthermore, the opening and closing member is an opening and closing telescopic cylinder 12, and an opening and closing plate 13 is fixed to the telescopic end of the opening and closing telescopic cylinder 12, and the shape of the opening and closing plate 13 matches the shape of the material discharge port. When the telescopic end of the opening and closing telescopic cylinder 12 drives the opening and closing plate 13 to move, the material discharge port can be opened and closed, and when the material discharge port is opened, the plurality of magnetic cores together with the fixing member 4 placed above the plurality of magnetic cores are assembled to the first shaping member 1 and the second shaping member 2.

[0074] Reference Figure 3 The expansion assembly 8 includes an expansion housing 81 and an expansion pressing member. A fixing platform 83 is fixedly installed on the side wall of the expansion housing 81. The fixing platform 83 is used to fix multiple magnetic cores. A fixing groove adapted to the fixing member 4 is correspondingly opened on the top of the fixing platform 83 for clamping the fixing member 4.

[0075] Reference Figure 3 and Figure 6 A guide shaping plate 84 is vertically fixed on both sides of the top of the fixing platform 83 along the width direction, and the two guide shaping plates 84 are respectively in contact with the outer walls of both sides of the fixing member 4.

[0076] The expansion pressing member includes an expansion trackless cylinder 85 installed in the expansion housing 81 along the vertical direction, and a clamping claw cylinder 86 is horizontally installed at the moving end of the expansion trackless cylinder 85. The clamping end of the clamping claw cylinder 86 is used to clamp and press the expansion member 3.

[0077] During the expansion process, the expansion piece 3 is first grabbed by the clamping cylinder 86 and placed between the assembled first forming piece 1 and the second forming piece 2, and then the expansion trackless cylinder 85 controls the clamping cylinder 86 to reset. At this time, the clamping ends of the clamping cylinder 86 are merged, and then the expansion trackless cylinder 85 controls the clamping ends of the clamping cylinder 86 to press down the expansion piece 3, thereby realizing the expansion of multiple magnetic cores.

[0078] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A square nanocrystalline magnetic core process for a square nanocrystalline magnetic core mold structure, characterized in that: The following steps are involved: Step 1: assemble and fix the bottom fixing member (4), the first shaping member (1), and the second shaping member (2) using an automatic assembly unit; Step 2: placing the plurality of magnetic cores and the top fixing member (4) between the assembled first shaping member (1) and the second shaping member (2) through an automatic assembly unit; Step 3: inserting the expansion piece (3) between the first shaping piece (1) and the second shaping piece (2) through an automatic assembly unit; Step 4: Place the shaped magnetic cores into a high temperature furnace for heat treatment; Step 5: Soak the multiple magnetic cores that have been heat treated in curing glue; Step 6: Place the soaked magnetic cores into a drying oven for drying; The automatic assembly unit comprises an assembly component (7) and an expansion component (8), wherein the assembly component (7) is used to assemble a fixing component (4), a first shaping component (1), a second shaping component (2) and a plurality of magnetic cores, and the expansion component (8) is used to install the expansion component (3); The mold structure comprises a first shaping piece (1) and a second shaping piece (2), wherein the first shaping piece (1) and the second shaping piece (2) are both used for shaping a plurality of magnetic cores; An expansion piece (3) is inserted between the first shaping piece (1) and the second shaping piece (2), and the expansion piece (3) is used to expand the plurality of magnetic cores; Two fixing members (4), the two fixing members (4) being used to cooperate in clamping the two ends of the plurality of magnetic cores, and the fixing members (4) being provided with direction limiting snap-fitting holes for the first shaping member (1) and the second shaping member (2) to be plugged in; The side surfaces of the expansion member (3) used for contacting the first shaping member (1) and the second shaping member (2) are arranged as guide slopes (5), and the side surfaces of the first shaping member (1) and the second shaping member (2) used for contacting the expansion member (3) are correspondingly arranged as inclined surfaces (6); The first shaping member (1) and the second shaping member (2) are hingedly fixed, and a contraction spring (9) is installed between the first shaping member (1) and the second shaping member (2); The assembly component (7) comprises an assembly housing (71), a mounting platform (72) is slidably provided on the side wall of the assembly housing (71), a lifting member (73) is installed in the assembly housing (71), the mounting platform (72) is fixed to the lifting end of the lifting member (73), a blanking member is installed on the top of the assembly housing (71), the blanking member is used to blank a plurality of magnetic cores and a top fixing member (4), and a feeding member is provided on one side of the assembly housing (71), the feeding member is used to feed the first shaping member (1) and the second shaping member (2); The expanded component (8) comprises an expanded housing (81) and an expanded pressing piece. A fixing platform (83) is fixedly mounted on the side wall of the expanded housing (81). The fixing platform (83) is used to fix a plurality of magnetic cores.

2. A square nanocrystalline magnetic core process for a square nanocrystalline magnetic core mold structure according to claim 1, characterized in that: A positioning groove is provided on the top surface of the mounting platform (72), the shape of the positioning groove matches the shape of the fixing member (4), and the depth of the positioning groove is less than the height of the fixing member (4).

3. A square nanocrystalline magnetic core process for a square nanocrystalline magnetic core mold structure according to claim 1, characterized in that: The unloading component comprises an unloading conveyor belt (10), the unloading conveyor belt (10) is installed on the top of the assembly housing (71), and a guide enclosure (11) for guiding the plurality of magnetic cores is installed on the unloading conveyor belt (10), a unloading opening is provided at the bottom of the guide enclosure (11), and an opening and closing component for opening and closing the unloading opening is installed in the assembly housing (71).

4. A square nanocrystalline magnetic core process for a square nanocrystalline magnetic core mold structure according to claim 1, characterized in that: The expansion pressing member comprises an expansion trackless cylinder (85) installed in the expansion housing (81) along the vertical direction, a clamping claw cylinder (86) is horizontally installed at the moving end of the expansion trackless cylinder (85), and the clamping end of the clamping claw cylinder (86) is used to clamp and press the expansion member (3).

Images