High-precision motor end cover injection molding mold

Abstract

The utility model belongs to the field of injection molds, and particularly relates to a high-precision motor end cover injection molding mold which comprises a bottom plate, a mold core is fixedly connected to the middle of the upper end of the bottom plate, two lower molds making contact with each other are slidably connected to the upper end of the bottom plate, the lower molds are slidably connected with the mold core, and a top plate is fixedly connected to the upper end of the bottom plate. An air cylinder is fixedly installed in the middle of the upper end of the top plate, and an air cylinder rod of the air cylinder penetrates through the top plate and is slidably connected with the top plate. The two-way screw rod and the screw barrel are rotated to do threaded motion, so that the connecting block drives the lower molds to slide on the bottom plate, the two lower molds are conveniently separated, the device is convenient to demold, and the elastic piece acts between the sliding sleeve and the air cylinder rod, so that the upper mold can be finely adjusted; and the upper mold and the lower mold are positioned through a positioning pin, so that the precision is higher after mold closing of the device, and the injection molding precision of the end cover is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding molds, in particular to a high-precision injection molding mold for an end cover of a motor. Background Art

[0002] The utility model patent with the patent authorization announcement number CN215120366U discloses a non-deformable front end cover of the motor insert injection molding, which belongs to the technical field of the front end cover of the motor insert injection molding, including a cover body, the top of the cover body is concave and is installed with a plastic reinforcement body, the top edge of the cover body is provided with a second fixing hole, the two sides of the top of the cover body are provided with a plastic reinforcement seat assembly, and the bottom of the cover body is opened through the cover body to provide an annular hollow seat. By adding metal nesting components and reinforcing ribs, the problem of stable operation of the motor under high power and heavy load is solved, and the manufacturing cost increased by changing the injection molding material is greatly reduced. However, when the device is injecting the motor end cover, the mold clamping accuracy will be reduced after long-term use, and there will be errors, which will affect the injection molding accuracy of the motor end cover. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a high-precision motor end cover injection molding mold, which solves the problem that when the device is used for injection molding of the motor end cover, the mold clamping accuracy will be reduced after a long time of use, and errors will occur, thus affecting the injection molding accuracy of the motor end cover.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-precision motor end cover injection molding mold comprises a base plate, a mold core is fixedly connected to the middle of the upper end of the base plate, two lower molds in contact with each other are slidably connected to the upper end of the base plate, the lower molds and the mold core are slidably connected, the upper end of the base plate is fixedly connected to a top plate, a cylinder is fixedly installed in the middle of the upper end of the top plate, the cylinder rod of the cylinder passes through the top plate and is slidably connected to the top plate, the lower end of the cylinder rod contacts the upper mold, and a positioning mechanism is provided on the upper mold.

[0006] In addition, the preferred structure is that the positioning mechanism includes a sliding sleeve, a support plate, a convex ring, a spring piece, a positioning pin, a connecting block, a slide groove, a screw barrel, a bidirectional screw, a knob, and a limit plate. The upper end of the upper mold is welded with a sliding sleeve, the outer side of the cylinder rod is fixedly sleeved with a supporting plate, the inner side of the sliding sleeve is welded with a spring piece, the lower end of the upper mold is welded with a positioning pin, the positioning pin and the lower mold are slidably connected, the lower end of the lower mold is welded with a connecting block, the lower end of the connecting block is welded with a screw barrel, the inner side of the screw barrel is threadedly connected with a bidirectional screw, and the middle outer side of the bidirectional screw is fixedly sleeved with a knob. By rotating the bidirectional screw and the screw barrel to make a threaded motion, the connecting block drives the lower mold to slide on the bottom plate, so that the two lower molds are easy to separate, so that the device is easy to demould, and the spring piece acts between the sliding sleeve and the cylinder rod, so that the upper mold can be fine-tuned, and the upper mold and the lower mold are positioned by the positioning pin, so that the device has higher precision after the mold is closed, and the end cap injection molding precision is higher.

[0007] In addition, a preferred structure is that a convex ring is welded to the upper end of the support plate, and the convex ring is in contact with the sliding sleeve. By providing the convex ring, the friction between the support plate and the sliding sleeve is reduced.

[0008] In addition, a preferred structure is that the spring sheet is made of elastic metal material, and the spring sheet is fixedly connected to the cylinder rod. By providing the spring sheet, the position between the sliding sleeve and the cylinder rod can be fine-tuned.

[0009] In addition, a preferred structure is that a slide groove is provided inside the bottom plate, and the slide groove is slidably connected to the connecting block. By providing the slide groove, the connecting block is guided.

[0010] In addition, a preferred structure is that a limiting plate is welded to the lower end of the bottom plate, and the limiting plate is slidably connected to the knob. The knob is limited by providing the limiting plate.

[0011] The beneficial effects of the utility model are:

[0012] The utility model rotates the bidirectional screw and the screw barrel to make a threaded motion, so that the connecting block drives the lower mold to slide on the bottom plate, so that the two lower molds are easy to separate, and the device is easy to demould. The spring sheet acts between the sliding sleeve and the cylinder rod, so that the upper mold can be fine-tuned, and the upper mold and the lower mold are positioned by the positioning pin, so that the device has higher accuracy after the mold is closed, and the end cover injection molding accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the overall structure of a high-precision motor end cover injection molding mold proposed by the utility model;

[0014] Figure 2A high-precision motor end cover injection molding mold proposed by the utility model Figure 1 A cross-sectional view of the sleeve;

[0015] Figure 3 A high-precision motor end cover injection molding mold proposed by the utility model Figure 1 A partial cross-sectional view of the front view;

[0016] Figure 4 A high-precision motor end cover injection molding mold proposed by the utility model Figure 3 Enlarged view of point A.

[0017] In the figure: 1, bottom plate; 2, mold core; 3, lower mold; 4, top plate; 5, cylinder; 6, upper mold; 7, positioning mechanism; 71, sliding sleeve; 72, supporting plate; 73, convex ring; 74, spring piece; 75, positioning pin; 76, connecting block; 77, sliding groove; 78, screw barrel; 79, bidirectional screw; 710, knob; 711, limit plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1 , Figure 3 A high-precision motor end cover injection molding mold includes a bottom plate 1, a mold core 2 is fixedly connected to the middle of the upper end of the bottom plate 1, two lower molds 3 in contact with each other are slidably connected to the upper end of the bottom plate 1, the lower mold 3 and the mold core 2 are slidably connected, the upper end of the bottom plate 1 is fixedly connected to a top plate 4, a cylinder 5 is fixedly installed in the middle of the upper end of the top plate 4, the cylinder rod of the cylinder 5 passes through the top plate 4 and is slidably connected to the top plate 4, the lower end of the cylinder rod contacts the upper mold 6, and a positioning mechanism 7 is provided on the upper mold 6.

[0020] See also Figure 1-Figure 4The positioning mechanism 7 includes a sleeve 71, a support plate 72, a convex ring 73, a spring 74, a positioning pin 75, a connecting block 76, a slide groove 77, a screw barrel 78, a bidirectional screw 79, a knob 710, and a limit plate 711. The upper end of the upper mold 6 is welded with a sleeve 71, and the outer side of the cylinder rod is fixedly sleeved with a support plate 72. The upper end of the support plate 72 is welded with a convex ring 73. The convex ring 73 contacts the sleeve 71. By setting the convex ring 73, the support plate 7 is reduced. 2 and the sliding sleeve 71, the sliding sleeve 71 is welded with a spring sheet 74, the spring sheet 74 is made of elastic metal, the spring sheet 74 is fixedly connected to the cylinder rod, and the position between the sliding sleeve 71 and the cylinder rod can be finely adjusted by setting the spring sheet 74. The lower end of the upper mold 6 is welded with a positioning pin 75, the positioning pin 75 is slidably connected to the lower mold 3, and the lower end of the lower mold 3 is welded with a connecting block 76. The bottom plate 1 is provided with a sliding groove 77, and the sliding groove 77 and the connecting block The block 76 is slidably connected, and the connecting block 76 is guided by setting a slide groove 77. The lower end of the connecting block 76 is welded with a screw barrel 78, and the interior of the screw barrel 78 is threadedly connected with a bidirectional screw 79, and a knob 710 is fixedly sleeved on the middle outer side of the bidirectional screw 79. A limiting plate 711 is welded to the lower end of the bottom plate 1, and the limiting plate 711 and the knob 710 are slidably connected. The limiting plate 711 is set to limit the knob 710, and the bidirectional screw 79 and the screw barrel 78 are rotated to make a threaded movement, so that the connecting block 76 drives the lower mold 3 to slide on the bottom plate 1, so that the two lower molds 3 are easy to separate, so that the device is easy to demould, and the spring piece 74 acts between the sliding sleeve 71 and the cylinder rod, so that the upper mold 6 can be fine-tuned, and the positioning pin 75 is used to position the upper mold 6 and the lower mold 3, so that the device can be more accurate after the mold is closed, and the end cover injection molding accuracy is higher.

[0021] The specific implementation process of the utility model is as follows: when in use, the bidirectional screw rod 79 and the screw barrel 78 are manually rotated to make a threaded motion, so that the screw barrel 78 moves toward each other, the screw barrel 78 drives the connecting block 76 to move, and the connecting block 76 drives the lower mold 3 to move, so that the lower mold 3 slides on the upper end of the bottom plate 1 and contacts the mold core 2, and then the cylinder 5 is started, the cylinder 5 drives the cylinder rod to extend, and the cylinder rod drives the upper mold 6 to move downward, so that the positioning pin 75 enters the lower mold 3. In this process, the spring piece 74 acts between the sliding sleeve 71 and the cylinder rod, so that the upper mold 6 can be fine-tuned, the upper mold 6 and the lower mold 3 are positioned by the positioning pin 75, and the two-way screw 79 and the screw barrel 78 are rotated to make a threaded motion, so that the connecting block 76 drives the lower mold 3 to slide on the bottom plate 1, so that the two lower molds 3 are easy to separate, and the device is easy to demould, and the spring piece 74 acts between the sliding sleeve 71 and the cylinder rod, so that the upper mold 6 can be fine-tuned, and the positioning pin 75 is used to position the upper mold 6 and the lower mold 3, so that the device has a higher accuracy after the mold is closed, and the end cover injection molding accuracy is higher.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-precision motor end cover injection molding mold, comprising a base plate (1), characterized in that: A mold core (2) is fixedly connected to the middle of the upper end of the bottom plate (1), and two lower molds (3) in contact with each other are slidably connected to the upper end of the bottom plate (1), and the lower molds (3) and the mold core (2) are slidably connected. The upper end of the bottom plate (1) is fixedly connected to a top plate (4), and a cylinder (5) is fixedly installed in the middle of the upper end of the top plate (4), and the cylinder rod of the cylinder (5) passes through the top plate (4) and is slidably connected to the top plate (4), and the lower end of the cylinder rod contacts the upper mold (6), and a positioning mechanism (7) is provided on the upper mold (6).

2. A high-precision motor end cover injection molding mold according to claim 1, characterized in that: The positioning mechanism (7) comprises a sliding sleeve (71), a support plate (72), a convex ring (73), a spring sheet (74), a positioning pin (75), a connecting block (76), a sliding groove (77), a screw barrel (78), a bidirectional screw rod (79), a knob (710), and a limiting plate (711). The upper end of the upper die (6) is welded with a sliding sleeve (71), the outer side of the cylinder rod is fixedly sleeved with a support plate (72), the inner side of the sliding sleeve (71) is welded with a spring sheet (74), the lower end of the upper die (6) is welded with a positioning pin (75), the positioning pin (75) and the lower die (3) are slidably connected, the lower end of the lower die (3) is welded with a connecting block (76), the lower end of the connecting block (76) is welded with a screw barrel (78), the inner side of the screw barrel (78) is connected with a bidirectional screw rod (79) by means of a thread, and the middle outer side of the bidirectional screw rod (79) is fixedly sleeved with a knob (710).

3. A high-precision motor end cover injection molding mold according to claim 2, characterized in that: A convex ring (73) is welded to the upper end of the support plate (72), and the convex ring (73) is in contact with the sliding sleeve (71).

4. A high-precision motor end cover injection molding mold according to claim 2, characterized in that: The spring sheet (74) is made of elastic metal material, and the spring sheet (74) is fixedly connected to the cylinder rod.

5. The high-precision motor end cover injection molding mold according to claim 2, characterized in that: A sliding groove (77) is provided inside the bottom plate (1), and the sliding groove (77) is slidably connected to the connecting block (76).

6. The high-precision motor end cover injection molding mold according to claim 2, characterized in that: A limiting plate (711) is welded to the lower end of the bottom plate (1), and the limiting plate (711) is slidably connected to the knob (710).

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