Pre-assembling tool used before injection molding and glue coating of long stator iron core

Abstract

The utility model discloses a preassembling tool used before injection molding and glue coating of a long stator iron core, which comprises a lower backing plate, a plurality of bolsters arranged on the lower backing plate and a plurality of groups of first positioning holes, each group of first positioning holes and the bolsters are arranged alternately, the bolsters are used for placing the long stator iron core, and each group of first positioning holes are used for fixing a dovetail plate. The lower backing plate is provided with a positioning groove, and the bottom of the long stator iron core is located in the positioning groove during application. Longitudinal positioning blocks which are detachably fixed are arranged at the end parts of the bolsters at the two ends, and the longitudinal positioning blocks are detached after the long stator iron core is installed. Guide slopes are arranged on the upper portions of the inner side faces of the longitudinal positioning blocks. The injection molding machine has the advantages that the assembly precision between the long stator iron core and the dovetail plate after injection molding can meet the specified assembly precision; and the operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to a pre-assembly tooling before injection molding and rubber coating of a long stator core, belonging to the technical field of injection molding and shaping tooling. Background Art

[0002] The long stator core is applied to the electromagnetic system of a maglev train track and is a rectangular block. Among the upper and lower side surfaces, one side surface has dovetail plates partially embedded in the side surface, and the other side surface has wire grooves. The long stator core in application must be subjected to surface insulation treatment. Specifically, injection molding and rubber coating (epoxy resin) are carried out by using a mold in a high-temperature environment, and then cooling and demolding are carried out.

[0003] Since the dovetail plates and the long stator core are assembled only before injection molding and rubber coating, and it is required that the position relationship between the dovetail plates and the long stator core must strictly conform to the specified position relationship. If the two are directly assembled in the injection mold, it is very difficult to ensure the precise assembly relationship, and their respective weights, especially the weight of the iron core, are very large, and it is also very difficult to operate. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to make the assembled precision between the long stator core after injection molding and the dovetail plates conform to the specified requirements.

[0005] In view of the above problems, the technical solution proposed by the utility model is:

[0006] A pre-assembly tooling before injection molding and rubber coating of a long stator core, comprising a lower backing plate, a plurality of pad pillows arranged on the lower backing plate, and multiple groups of positioning holes I. Each group of positioning holes I is arranged alternately with the pad pillows. The pad pillows are used for placing the long stator core, and each group of positioning holes I is used for fixing one dovetail plate.

[0007] A positioning groove is arranged on the lower backing plate. During application, the bottom of the long stator core is located in the positioning groove.

[0008] The width of the positioning groove is greater than the width of the long stator core, and the width difference is 0.18 - 0.22 mm. The long stator core during application is located in the middle of the positioning groove.

[0009] At the ends of the pad pillows at both ends, longitudinally-positioning blocks that can be detachably fixed are provided and are removed after the long stator core is installed.

[0010] A guiding inclined surface is arranged at the upper part of the inner side surface of the longitudinally-positioning block.

[0011] A positioning pin II is arranged under the pad pillow, and a positioning hole II corresponding to the positioning pin II is arranged on the lower backing plate.

[0012] Each group of positioning holes I has two positioning holes I for positioning the two ends of the dovetail plate, and a positioning pin I that can be inserted into the positioning holes I is arranged on the dovetail plate. Beneficial effects

[0013] 1. It can ensure that the assembled precision between the completed injection-molded long stator core and the dovetail plate meets the specified requirements;

[0014] 2. It is convenient and fast to operate. Description of the drawings

[0015] Figure 1 Stereoscopic schematic diagram of the pre-installed dovetail block of the pre-installation tooling described in Embodiment 1;

[0016] Figure 2 Schematic diagram of the disassembly of the pre-installation tooling described in Embodiment 1;

[0017] Figure 3 Stereoscopic schematic diagram of the pre-installed dovetail block and long stator core of the pre-installation tooling described in Embodiment 1;

[0018] Figure 4 Stereoscopic schematic diagram of the pre-installed dovetail block of the pre-installation tooling described in Embodiment 2;

[0019] Figure 5 For Figure 4 Partial schematic diagram of.

[0020] In the figure: 1. Lower backing plate; 2. Pad pillow; 201. Positioning groove; 3. Longitudinal positioning block; 301. Guide inclined plane; 302. Bolt; 4. First positioning hole; 401. First positioning pin; 5. Second positioning hole; 501. Second positioning pin; 6. Long stator core; 7. Dovetail plate. Detailed implementation manners

[0021] The following further describes the present utility model with reference to the drawings: Embodiment 1

[0022] As Figure 1 —3 shows, a pre-installation tooling for the long stator core before injection molding and rubber coating includes a lower backing plate 1, a plurality of pad pillows 2 arranged on the lower backing plate 1, and multiple groups of first positioning holes 4. Each group of first positioning holes 4 is arranged alternately with the pad pillows 2. The pad pillows 2 are used to place the long stator core 6, and each group of first positioning holes 4 is used to fix a dovetail plate 7. In this way, during the setting, the multiple pad pillows 2 and multiple groups of first positioning holes 4 can be strictly set on the lower backing plate 1 according to the specified dimensions. Before the long stator core is injection molded and rubber coated, the dovetail plate 7 is pre-installed according to the first positioning holes 4 and the long stator core 6 is pre-installed on the pad pillows 2, and then together with the lower backing plate 1 is placed into the injection mold. In this way, it can ensure that the assembled precision between the completed injection-molded long stator core and the dovetail plate meets the specified requirements, and the pre-installation on the lower backing plate 1 before injection molding is much more convenient and accurate than the assembly in the injection mold.

[0023] The lower backing plate 1 is provided with a positioning groove 201. During application, the bottom of the long stator core is located within the positioning groove 201. The width of the positioning groove 201 is greater than the width of the long stator core 6, and the width difference is 0.18 - 0.22 mm, such as 0.18 mm, 0.2 mm, 0.22 mm. The long stator core 6 during application is located in the center of the positioning groove 201. In this way, it can strictly ensure that the lateral accuracy of the long stator core 6 relative to the dovetail plate 7 meets the standard, and the lateral accuracy is relatively difficult to control.

[0024] A second positioning pin 501 is provided under the cushion block 2, and a second positioning hole 5 corresponding to the second positioning pin 501 is provided on the lower backing plate 1 to ensure the installation accuracy of the cushion block 2, and further ensure the pre-assembly accuracy of the long stator core 6.

[0025] Each group of first positioning holes 4 has two first positioning holes 4 for positioning the two ends of the dovetail plate 7. A first positioning pin 401 that can be inserted into the first positioning hole is provided on the dovetail plate 7 to ensure the pre-assembly accuracy of the dovetail plate 7. Embodiment 2

[0026] Such as Figure 4 、 5 As shown, this embodiment is a further improvement on Embodiment 1. At the ends of the cushion blocks 2 at both ends, longitudinally positioning blocks 3 that can be detachably fixed are provided. The longitudinally positioning blocks 3 are installed before pre-assembly and disassembled after the pre-assembly of the long stator core 6 is completed, so that the long stator core 6 is restricted by the longitudinally positioning blocks 3 provided at both ends and falls between the longitudinally positioning blocks 3 at both ends, realizing precise longitudinal positioning of the long stator core and making the pre-assembly more convenient. And the longitudinally positioning blocks 3 are disassembled after the installation of the long stator core 6 is completed to avoid abnormal rubber coating at the parts where the two ends of the long stator core 6 contact the longitudinally positioning blocks 3 during injection molding.

[0027] As an option, the detachable fixing method is the bolt 302 fixing method.

[0028] Furthermore, a guiding inclined surface 301 is provided at the upper part of the inner side surface of the longitudinally positioning block 3 to make it easier for the long stator core 6 to fall between the longitudinally positioning blocks 3 at both ends when being placed.

[0029] The above embodiments are only used to describe the present invention more clearly and should not be regarded as limiting the protection scope covered by the present invention. Any equivalent form of modification should be regarded as falling within the protection scope covered by the present invention.

Claims

1. A pre-assembly tooling for long stator core before injection molding and rubber coating, characterized in that: It includes a lower backing plate (1), a plurality of bolster blocks (2) arranged on the lower backing plate (1), and multiple groups of first positioning holes (4). Each group of first positioning holes (4) is arranged alternately with the bolster blocks (2). The bolster blocks (2) are used for placing the long stator core (6), and each group of first positioning holes (4) is used for fixing a dovetail plate (7).

2. The pre-assembly tooling for the long stator core before injection molding and rubber coating according to claim 1, characterized in that: A positioning groove (201) is provided on the lower backing plate (1). During application, the bottom of the long stator core is located in the positioning groove (201).

3. The pre-assembly tooling for the long stator core before injection molding and rubber coating according to claim 2, characterized in that: The width of the positioning groove (201) is greater than the width of the long stator core (6), and the width difference is 0.18 - 0.22 mm. The long stator core (6) during application is located in the center of the positioning groove (201).

4. The pre-assembly tooling for the long stator core before injection molding and rubber coating according to claim 2, characterized in that: At the ends of the bolster blocks (2) at both ends, longitudinally-positioning blocks (3) that can be detachably fixed are provided and are removed after the installation of the long stator core (6) is completed.

5. The pre-assembly tooling for the long stator core before injection molding and rubber coating according to claim 4, characterized in that: A guiding inclined surface (301) is provided at the upper part of the inner side surface of the longitudinally-positioning block (3).

6. The pre-assembly tooling for the long stator core before injection molding and rubber coating according to any one of claims 1-5, characterized in that: A second positioning pin (501) is provided under the bolster block (2), and a second positioning hole (5) corresponding to the second positioning pin (501) is provided on the lower backing plate (1).

7. The pre-installation tooling for the long stator core before injection molding and rubber coating according to claim 6, characterized in that: Each group of first positioning holes (4) has two first positioning holes (4) for positioning the two ends of the dovetail plate (7), and a first positioning pin (401) that can be inserted into the first positioning holes is provided on the dovetail plate (7).

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