Injection mold of windscreen wiper connector

Abstract

The utility model provides an injection mold of a windscreen wiper connector, and belongs to the technical field of automobile accessory manufacturing. An outer movable groove and an inner movable groove are formed in the surface of a lower mold core of the injection mold, a side core-pulling sliding block is arranged in the outer movable groove in a sliding mode, two back-to-back side core-pulling sliding blocks are arranged in the inner movable groove, each side core-pulling sliding block is provided with a side locking face and a vertical face, a horizontally-arranged core column is arranged on the vertical face of each side core-pulling sliding block, and a spring groove is further formed in the vertical face of each side core-pulling sliding block. A spring is arranged in the spring groove, one end of the spring abuts against the bottom wall of the spring groove, the other end of the spring abuts against the lower die core, a core pulling hole allowing the core column to be inserted is formed in the forming face of the lower die core, an inclined extrusion face is arranged on the upper die core, and the extrusion face can be attached to the side locking face. Due to the fact that the side core-pulling structure is simple and small in occupied space, the side core-pulling structure can also be arranged between the two mold cavities, and the side core-pulling structure is particularly suitable for injection molds with multiple mold cavities.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts manufacturing and relates to an injection mold of a wiper connector. Background Art

[0002] The wiper connector is used to connect the wiper and the wiper swing arm, including a main connector and an auxiliary connector. The side wall of the main connector is provided with a hole, the top wall of the main connector is provided with a groove, the top wall of the auxiliary connector is provided with a matching groove, and the side wall of the auxiliary connector is provided with a matching hole. When the main connector and the auxiliary connector are fixedly connected together, the groove and the matching groove match together to form a fixed groove, and the hole and the matching hole are aligned to form a fixed hole. The fixing hole is a side perforation structure. The fixing holes are provided on both sides of the wiper connector. The ejection mechanism in the injection mold cannot directly eject the plastic part from the mold. Therefore, it is necessary to set a side core-pulling slider at the side wall position of the plastic part, and pull out the side core-pulling slider by a cylinder. However, if it is a multi-cavity structure, the inner space is small, and it is difficult to adopt the conventional cylinder-pulling side core-pulling slider mode. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose an injection mold for a wiper connector. The side core pulling structure is simple and occupies little space. The side core pulling structure can also be arranged between two mold cavities, which is particularly suitable for injection molds with multiple mold cavities.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an injection mold for a wiper connector, comprising an upper top plate, a diverter plate, an upper mold core, a lower mold core, a vertical plate, a lower bottom plate, a first ejector plate and a second ejector plate, characterized in that the upper mold core, the diverter plate and the upper top plate are fixed by bolts in sequence, the lower mold core, the vertical plate and the lower bottom plate are fixed by bolts in sequence, the first ejector plate and the second ejector plate are located between the two vertical plates, a mold cavity is formed when the upper mold core and the lower mold core are molded together, a plurality of mold cavities are in a matrix portion, and an outer movable A groove and an inner movable groove, a side core-pulling slider is provided for sliding in the outer movable groove, and two side core-pulling sliders facing back to back are provided in the inner movable groove, the side core-pulling slider has a side locking surface and a vertical surface, a horizontally arranged core column is provided on the vertical surface of the side core-pulling slider, and a spring groove is also provided on the vertical surface, a spring is arranged in the spring groove, one end of the spring rests on the bottom wall of the spring groove, and the other end of the spring rests on the lower die core, a core-pulling hole for inserting the core column is provided on the forming surface of the lower die core, and an inclined extrusion surface is provided on the upper die core, and the extrusion surface can be abutted against the side locking surface.

[0005] Furthermore, a limiting block is embedded in the outer movable groove, and the side core-pulling sliding block abuts against the limiting block under the action of a spring.

[0006] Furthermore, the two side core-pulling sliders in the inner movable groove can abut against each other under the action of a spring.

[0007] Furthermore, the outer movable groove and the inner movable groove are both provided with two parallel slide rails, the slide rails are T-shaped, a T-shaped slide block is provided at the bottom of the side core-pulling slide block, and the slide rails are embedded in the T-shaped slide holes.

[0008] Furthermore, a guide slide column is fixed on the lower bottom plate, and guide slide holes for the guide slide column to pass through are opened on the first ejection plate and the second ejection plate.

[0009] Furthermore, an injection connection port is opened on the upper top plate, a plurality of diversion pipes are opened on the diversion plate, a plurality of injection pipes connected to the mold cavity are opened in the upper template, the diversion pipe inlet is connected to the injection connection port, and the diversion pipe outlet is connected to the injection pipe.

[0010] Furthermore, a ejector rod is fixed on the first ejector plate, and the ejector rod passes through the lower mold core and contacts the mold cavity.

[0011] Start the injection molding machine, and close the upper mold and the lower mold. During this process, the extrusion surface on the upper mold contacts the side locking surface first, and the side core pull slider is pushed to move horizontally along the slide rail until the side core pull slider is completely fitted with the upper mold. The plastic feeding pipe is connected to the injection connection port, and the molten plastic is continuously injected into the mold. The plastic enters the diversion pipe and finally enters the mold cavity through the injection pipe. After the product is cooled and shaped, the mold is opened. The extrusion surface of the upper mold is gradually separated from the side locking surface. The side core pull slider is gradually moved away from the mold cavity under the force of the spring, and the core column withdraws from the core pull hole until the side core pull slider of the outer movable groove is against the limit block. The two back-to-back side core pull sliders in the inner movable groove will be against each other, and then the unloading cylinder is started to push the second ejector plate and the first ejector plate up, driving the ejector rod to eject the wiper connector product out of the mold cavity of the lower mold, so that workers can easily take the material.

[0012] Compared with the prior art, the injection mold of the wiper connector has the following advantages:

[0013] 1. The side core pulling structure is simple and occupies little space. The side core pulling structure can also be set between two mold cavities, which is particularly suitable for multi-cavity injection molds;

[0014] 2. The upper mold core is an integrated structure with a solid structure. Two side core pulling structures are set in the middle inner movable groove. It has few parts, is not easy to damage, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the injection mold of the wiper connector.

[0016] Figure 2 It is a structural diagram of the side core pulling slider.

[0017] Figure 3This is a product picture of a wiper connector.

[0018] In the figure, 1, upper ejector plate; 2, diverter plate; 3, upper mold core; 4, lower mold core; 5, vertical plate; 6, lower bottom plate; 7, first ejector plate; 8, second ejector plate; 9, mold cavity; 10, outer movable groove; 11, inner movable groove; 12, side core-pulling slider; 13, side locking surface; 14, vertical surface; 15, core column; 16, spring groove; 17, spring; 18, core-pulling hole; 19, extrusion surface; 20, limit block; 21, slide rail; 22, guide slide column; 23, injection connection port; 24, diverter pipe; 25, injection pipe; 26, ejector rod. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figure 1 As shown, the injection mold of the wiper connector comprises an upper top plate 1, a diverter plate 2, an upper mold core 3, a lower mold core 4, a vertical plate 5, a lower bottom plate 6, a first top plate 7 and a second top plate 8, and is characterized in that the upper mold core 3, the diverter plate 2 and the upper top plate 1 are fixed in sequence by bolts, the lower mold core 4, the vertical plate 5 and the lower bottom plate 6 are fixed in sequence by bolts, the first top plate 7 and the second top plate 8 are located between the two vertical plates 5, and a mold cavity 9 is formed when the upper mold core 3 and the lower mold core 4 are molded together, and the multiple mold cavities 9 are in a matrix portion.

[0021] The surface of the lower mold core 4 is provided with an outer movable groove 10 and an inner movable groove 11. A side core-pulling slider 12 is slidably arranged in the outer movable groove 10, and two side core-pulling sliders 12 facing each other are arranged in the inner movable groove 11. Figure 2 As shown, the side core-pulling slider 12 has a side locking surface 13 and a vertical surface 14. The vertical surface 14 of the side core-pulling slider 12 has a horizontally arranged core column 15. The vertical surface 14 also has a spring groove 16. The spring groove 16 has a spring 17 inside. One end of the spring 17 rests on the bottom wall of the spring groove 16, and the other end of the spring 17 rests on the lower die core 4. The molding surface of the lower die core 4 is provided with a core-pulling hole 18 for inserting the core column 15. The upper die core 3 has an inclined extrusion surface 19, and the extrusion surface 19 can be in contact with the side locking surface 13.

[0022] The outer movable groove 10 is embedded with a limit block 20, and the side core-pulling slider 12 abuts against the limit block 20 under the action of the spring 17. The two side core-pulling sliders 12 in the inner movable groove 11 can abut against each other under the action of the spring 17. The outer movable groove 10 and the inner movable groove 11 are each provided with two parallel slide rails 21, and the slide rails 21 are T-shaped. A T-shaped slide rail is opened at the bottom of the side core-pulling slider 12, and the slide rail 21 is embedded in the T-shaped slide hole.

[0023] A guide column 22 is fixed on the lower bottom plate 6, and a guide hole for the guide column 22 to pass through is opened on the first ejector plate 7 and the second ejector plate 8. A ejector rod 26 is fixed on the first ejector plate 7, and the ejector rod 26 passes through the lower mold core 4 and contacts the mold cavity 9.

[0024] An injection molding connection port 23 is opened on the upper top plate 1, a plurality of diversion pipes 24 are opened on the diversion plate 2, and a plurality of injection pipes 25 connected to the mold cavity 9 are opened in the upper mold plate. The inlet of the diversion pipe 24 is connected to the injection molding connection port 23, and the outlet of the diversion pipe 24 is connected to the injection pipe 25.

[0025] like Figure 3 As shown, fixing holes are provided on both sides of the wiper connector, and the stem 15 is inserted into the fixing holes. After injection molding, the stem 15 needs to be pulled out of the fixing holes before the wiper connector is ejected by the ejector rod 26 .

[0026] Workflow: Start the injection molding machine and perform the mold closing action on the upper mold core 3 and the lower mold core 4. During this process, the extrusion surface 19 on the upper mold core 3 contacts the side locking surface 13 first, pushing the side core pulling slider 12 to move laterally along the slide rail 21 until the side core pulling slider 12 is completely fitted with the upper mold core 3. The plastic feeding pipe is connected to the injection molding connection port 23, and the molten plastic is continuously injected into the mold. The plastic enters the diversion pipe 24 and finally enters the mold cavity 9 through the injection pipe 25. After the product is cooled and shaped, the mold is opened. The extrusion surface 19 of the upper mold core 3 is gradually separated from the side locking surface 13, and the side core pulling slider 12 is gradually pushed away from the mold cavity 9 by the force of the spring 17. The core column 15 withdraws from the core pulling hole 18 until the side core pulling slider 12 of the outer movable groove 10 abuts against the limit block 20, and the two back-to-back side core pulling sliders 12 in the inner movable groove 11 will abut against each other. Then start the unloading cylinder to push the second ejector plate 8 and the first ejector plate 7 upward, and drive the ejector rod 26 to eject the wiper connector product out of the mold cavity 9 of the lower mold core 4, so that workers can easily take the material.

[0027] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An injection mold for a wiper connector, comprising an upper top plate, a diverter plate, an upper mold core, a lower mold core, a vertical plate, a lower bottom plate, a first ejector plate and a second ejector plate, characterized in that: The upper mold core, the diverter plate and the upper top plate are fixed by bolts in sequence, and the lower mold core, the vertical plate and the lower bottom plate are fixed by bolts in sequence. The first ejector plate and the second ejector plate are located between the two vertical plates. A mold cavity is formed when the upper mold core and the lower mold core are molded together. The multiple mold cavities are in a matrix part. The surface of the lower mold core is provided with an outer movable groove and an inner movable groove. A side core pulling slider is slidingly provided in the outer movable groove, and two side core pulling sliders facing back to back are provided in the inner movable groove. The side core pulling slider has a side locking surface and a vertical surface. A horizontally arranged core column is provided on the vertical surface of the side core pulling slider, and a spring groove is also provided on the vertical surface. A spring is installed in the spring groove, one end of the spring rests on the bottom wall of the spring groove, and the other end of the spring rests on the lower mold core. A core pulling hole for inserting the core column is provided on the molding surface of the lower mold core, and an inclined extrusion surface is provided on the upper mold core, and the extrusion surface can be abutted against the side locking surface.

2. The injection mold of the wiper connector according to claim 1, characterized in that: A limiting block is embedded in the outer movable groove, and the side core-pulling sliding block abuts against the limiting block under the action of a spring.

3. The injection mold of the wiper connector according to claim 2, characterized in that: The two side core-pulling slide blocks in the inner movable groove can abut against each other under the action of the spring.

4. The injection mold of the wiper connector according to claim 3, characterized in that: The outer movable groove and the inner movable groove are both provided with two parallel slide rails, the slide rails are T-shaped, a T-shaped slide block is provided at the bottom of the side core-pulling slide block, and the slide rails are embedded in the T-shaped slide holes.

5. The injection mold of the wiper connector according to claim 1, characterized in that: A guide slide column is fixed on the lower bottom plate, and guide slide holes for the guide slide column to pass through are provided on the first ejecting plate and the second ejecting plate.

6. The injection mold of the wiper connector according to claim 1, characterized in that: An injection connection port is opened on the upper top plate, a plurality of diversion pipes are opened on the diversion plate, a plurality of injection pipes connected to the mold cavity are opened in the upper template, the diversion pipe inlet is connected to the injection connection port, and the diversion pipe outlet is connected to the injection pipe.

7. The injection mold of the wiper connector according to claim 1, characterized in that: A ejector rod is fixed on the first ejector plate, and the ejector rod passes through the lower mold core and contacts the mold cavity.

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