Base injection mold

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a base injection mold which comprises a bottom plate, square iron is fixedly connected to the upper surface of the bottom plate, a lower mold frame is fixedly connected to the upper surface of the square iron, and a lower mold core is fixedly connected to the inner wall of the lower mold frame. An upper mold frame is arranged on the upper surface of the lower mold frame in an attached mode. According to the base injection mold, through cooperation of a T-shaped column, a hammering support, a connecting block, a second spring and a shifting frame, in the upward moving process of the upper mold frame, a hammering block on the hammering support can automatically hammer a first trapezoidal block on an ejection support for multiple times, and the first trapezoidal block can be automatically ejected through the hammering force of the hammering block on the inclined face of the first trapezoidal block; when the ejection support is used, the ejection rod exerts multiple times of instantaneous impact force on the formed base, at the moment, the formed base and the lower mold core can be loosened through the impact force, and then the formed base and the lower mold core can be smoothly separated through the ejection support.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and specifically relates to a base injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product.

[0003] Currently, when using injection molds to make bases, the raw material is usually injected into the mold cavity, which is composed of an upper mold core and a lower mold core, through the runner on the injection mold. After the raw material cools and solidifies, the base is obtained. At the same time, after the injection mold is opened, the ejector rod on the injection mold can separate the formed base from the lower mold core, making it easier for workers to remove the formed base. However, in the actual injection molding process, the formed base often gets stuck on the lower mold core, which prevents the ejector rod from properly separating the formed base from the lower mold core, making it more troublesome for users to remove the formed base from the lower mold core. Utility Model Content

[0004] The purpose of this utility model is to provide a base injection mold that solves the problem that, in the actual injection molding process, the molded base often gets stuck on the lower mold core, causing the ejector rod to be unable to properly separate the molded base from the lower mold core.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A base injection mold includes a base plate, a square iron plate fixedly connected to the upper surface of the base plate, a lower mold frame fixedly connected to the upper surface of the square iron plate, a lower mold core fixedly connected to the inner wall of the lower mold frame, an upper mold frame fitted to the upper surface of the lower mold frame, an upper mold core fixedly connected to the inner wall of the upper mold frame, and a top plate fixedly connected to the upper surface of the upper mold frame. Ejection holes are provided inside both the lower mold frame and the lower mold core. A first circular hole is provided inside the lower mold frame. A top plate is fitted to the bottom of the upper mold frame, the inner wall of the first circular hole, and the inner wall of the ejection hole. An ejector bracket is provided, with a first spring fixedly connected to the upper surface of the ejector bracket and the bottom of the lower mold frame. A T-shaped column is fixedly connected to the upper surface of the base plate. A hammering bracket is fitted to the surface of the T-shaped column and the side of the ejector bracket. A connecting block is fixedly connected to the upper surface of the T-shaped column. A second spring is fixedly connected to the left and right sides of the connecting block and the side of the hammering bracket. A toggle frame is fixedly connected to the left and right sides of the upper mold frame. The surface of the toggle frame is fitted to the inner wall of the hammering bracket. An electric push rod is fixedly connected to the left and right sides of the connecting block.

[0007] The present invention is further configured such that the ejector bracket includes a horizontal plate, an ejector rod, a pressing column, and a first trapezoidal block. The bottom of the first spring, the bottom of the ejector rod, and the bottom of the pressing column are all fixedly connected to the upper surface of the horizontal plate. The surface of the ejector rod is in contact with the inner wall of the ejector hole. The surface of the pressing column is in contact with the inner wall of the first circular hole. The bottom of the upper mold frame is in contact with the upper surface of the pressing column. The upper surface of the first trapezoidal block is fixedly connected to the bottom of the horizontal plate. The inclined surface of the first trapezoidal block is in contact with the side of the hammering bracket.

[0008] The present invention is further configured such that the hammering support includes a column, a trapezoidal groove, a U-shaped plate, a limiting post, a connecting post, and a hammering block. The side of the column is fixedly connected to the side of the second spring. The trapezoidal groove is formed on the side of the column, and the inner wall of the trapezoidal groove is in contact with the surface of the actuating frame. The bottom of the column is fixedly connected to the upper surface of the U-shaped plate. The inner wall of the U-shaped plate is in contact with the surface of the T-shaped post. The front and rear sides of the inner wall of the U-shaped plate are fixedly connected to the surface of the limiting post. The surface of the limiting post is in contact with the surface of the T-shaped post. The two ends of the connecting post are fixedly connected to the side of the column and the side of the hammering block, respectively. The inclined surface of the first trapezoidal block is in contact with the side of the hammering block.

[0009] The present invention is further configured such that the actuating frame includes a U-shaped column and a second trapezoidal block, the left and right sides of the upper mold frame are fixedly connected to the side of the U-shaped column, the surface of the U-shaped column is fixedly connected to the inner wall of the second trapezoidal block, and the surface of the second trapezoidal block is in contact with the inner wall of the trapezoidal groove.

[0010] The present invention is further configured such that a second circular hole is provided inside the column, and an adjustment bracket is fitted to the inner wall of the second circular hole and the left and right sides of the column. A cylinder is fixedly connected to the bottom of the adjustment bracket, and the inner wall of the cylinder is fixedly connected to the surface of the second spring.

[0011] The present invention is further configured such that the adjusting bracket includes an adjusting bolt, a limiting ring, and a nut; the inner wall of the second circular hole and one side of the column are both in contact with the surface of the adjusting bolt; the other side of the column is in contact with the side of the limiting ring; the inner wall of the limiting ring is fixedly connected to the surface of the adjusting bolt; the surface of the adjusting bolt is threadedly connected to the inner wall of the nut; and the bottom of the nut is fixedly connected to the upper surface of the cylinder.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This utility model discloses a base injection mold. Through the cooperation of a T-shaped column, a hammering bracket, a connecting block, a second spring, and a deflector, the hammering block on the hammering bracket can automatically and repeatedly hammer the first trapezoidal block on the ejector bracket during the upward movement of the upper mold frame. The hammering force of the hammering block on the inclined surface of the first trapezoidal block causes the ejector rod to apply multiple instantaneous impact forces to the molded base. At this time, the impact force can loosen the molded base from the lower mold core, thereby allowing the ejector bracket to smoothly separate the molded base from the lower mold core.

[0014] The present invention provides a base injection mold that, through the cooperation of a second circular hole, an adjusting bracket, and a cylinder, allows the user to change the impact force of the hammer block on the first trapezoidal block by rotating the adjusting bolt on the adjusting bracket. This allows the injection mold to adjust the magnitude of the impact force of the hammer block on the first trapezoidal block according to the material of the raw material, thereby preventing defects such as cracking, deformation, or scratches from occurring on the molded base. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a left view of the structure of this utility model;

[0017] Figure 3 This is a top view of the lower mold frame in this utility model;

[0018] Figure 4 This is a front view of the ejector bracket in this utility model;

[0019] Figure 5 This is a side view of the hammering bracket in this utility model;

[0020] Figure 6 yes Figure 5 Sectional view at point AA;

[0021] Figure 7 This is a front view of the toggle bracket in this utility model;

[0022] Figure 8 This is a side view of the toggle bracket in this utility model;

[0023] Figure 9 This is a front view of the adjusting bracket in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Base plate; 2. Square iron; 3. Lower mold frame; 4. Lower mold core; 5. Upper mold frame; 6. Upper mold core; 7. Top plate; 8. Ejection hole; 9. First round hole; 10. Ejection bracket; 101. Horizontal plate; 102. Ejection rod; 103. Pressing column; 104. First trapezoidal block; 11. First spring; 12. T-shaped column; 13. Hammering bracket; 131. Column; 132. Trapezoidal groove; 133. U-shaped plate; 134. Limiting column; 135. Connecting column; 136. Hammering block; 14. Connecting block; 15. Second spring; 16. Actuating frame; 161. U-shaped column; 162. Second trapezoidal block; 17. Electric push rod; 18. Second round hole; 19. Adjusting bracket; 191. Adjusting bolt; 192. Limiting ring; 193. Nut; 20. Cylinder. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1 to 8 As shown, the base injection mold includes a base plate 1. A square iron 2 is fixedly connected to the upper surface of the base plate 1. A lower mold frame 3 is fixedly connected to the upper surface of the square iron 2. A lower mold core 4 is fixedly connected to the inner wall of the lower mold frame 3. An upper mold frame 5 is fitted to the upper surface of the lower mold frame 3. An upper mold core 6 is fixedly connected to the inner wall of the upper mold frame 5. A top plate 7 is fixedly connected to the upper surface of the upper mold frame 5. Ejection holes 8 are provided inside the lower mold frame 3 and the lower mold core 4. A first circular hole 9 is provided inside the lower mold frame 3. Ejection brackets 10 are fitted to the bottom of the upper mold frame 5, the inner wall of the first circular hole 9, and the inner wall of the ejection hole 8. A first spring 11 is fixedly connected to the upper surface of the ejector bracket 10 and the bottom of the lower mold frame 3. A T-shaped column 12 is fixedly connected to the upper surface of the base plate 1. A hammering bracket 13 is attached to the surface of the T-shaped column 12 and the side of the ejector bracket 10. A connecting block 14 is fixedly connected to the upper surface of the T-shaped column 12. A second spring 15 is fixedly connected to the left and right sides of the connecting block 14 and the side of the hammering bracket 13. A toggle frame 16 is fixedly connected to the left and right sides of the upper mold frame 5. The surface of the toggle frame 16 is attached to the inner wall of the hammering bracket 13. An electric push rod 17 is fixedly connected to the left and right sides of the connecting block 14.

[0029] The ejector bracket 10 includes a horizontal plate 101, an ejector rod 102, a pressing column 103, and a first trapezoidal block 104. The bottom of the first spring 11, the bottom of the ejector rod 102, and the bottom of the pressing column 103 are all fixedly connected to the upper surface of the horizontal plate 101. The surface of the ejector rod 102 is in contact with the inner wall of the ejector hole 8. The surface of the pressing column 103 is in contact with the inner wall of the first circular hole 9. The bottom of the upper mold frame 5 is in contact with the upper surface of the pressing column 103. The upper surface of the first trapezoidal block 104 is fixedly connected to the bottom of the horizontal plate 101. The inclined surface of the first trapezoidal block 104 is in contact with the side of the hammering bracket 13.

[0030] The hammering support 13 includes a column 131, a trapezoidal groove 132, a U-shaped plate 133, a limiting post 134, a connecting post 135, and a hammering block 136. The side of the column 131 is fixedly connected to the side of the second spring 15. The trapezoidal groove 132 is opened on the side of the column 131. The inner wall of the trapezoidal groove 132 is in contact with the surface of the actuating frame 16. The bottom of the column 131 is fixedly connected to the upper surface of the U-shaped plate 133. The inner wall of the U-shaped plate 133 is in contact with the surface of the T-shaped post 12. The front and rear sides of the inner wall of the U-shaped plate 133 are fixedly connected to the surface of the limiting post 134. The surface of the limiting post 134 is in contact with the surface of the T-shaped post 12. The two ends of the connecting post 135 are fixedly connected to the side of the column 131 and the side of the hammering block 136, respectively. The inclined surface of the first trapezoidal block 104 is in contact with the side of the hammering block 136.

[0031] The actuating frame 16 includes a U-shaped column 161 and a second trapezoidal block 162. The left and right sides of the upper mold frame 5 are fixedly connected to the side of the U-shaped column 161. The surface of the U-shaped column 161 is fixedly connected to the inner wall of the second trapezoidal block 162. The surface of the second trapezoidal block 162 is in contact with the inner wall of the trapezoidal groove 132.

[0032] It should be noted that the tension of the second spring 15 on the column 131 of the hammering bracket 13 allows the second trapezoidal block 162 on the actuating frame 16 to be in close contact with the column 131 or the trapezoidal groove 132. Simultaneously, the cooperation of the U-shaped plate 133, the limiting post 134, and the T-shaped post 12 ensures that the column 131 can only move left or right. When the upper mold frame 5 moves upward, the second trapezoidal block 162 on the actuating frame 16 moves upward through the upper mold frame 5. The inclined surface above the second trapezoidal block 162 allows the second trapezoidal block 162 to automatically separate from the trapezoidal groove 132 during the upward movement of the upper mold frame 5. When the second trapezoidal block 162 contacts the side of the column 131, the second spring 15 is stretched. Then, when the second trapezoidal block 162 aligns with the trapezoidal groove 132, the second spring 15... The tension of the spring 15 on the column 131 allows the hammer block 136 to impact the side of the first trapezoidal block 104. Furthermore, by setting multiple trapezoidal grooves 132 on the column 131, the hammer block 136 can impact the side of the first trapezoidal block 104 multiple times. At this time, the hammering force applied by the hammer block 136 to the inclined surface of the first trapezoidal block 104 causes the ejector rod 102 to apply multiple instantaneous impact forces to the formed base. Then, the impact force loosens the formed base from the lower mold core 4. When the upper mold frame 5 needs to move down, the column 131 can be pushed by the electric push rod 17 to displace the column 131 from the toggle frame 16. At the same time, when the upper mold frame 5 moves up, the tension of the first spring 11 on the horizontal plate 101 causes the ejector rod 102 to apply an upward pushing force to the formed base on the lower mold core 4.

[0033] like Figures 1 to 9 As shown, a second circular hole 18 is provided inside the column 131. Adjustment brackets 19 are fitted to the inner wall of the second circular hole 18 and the left and right sides of the column 131. A cylinder 20 is fixedly connected to the bottom of the adjustment bracket 19. The inner wall of the cylinder 20 is fixedly connected to the surface of the second spring 15.

[0034] The adjusting bracket 19 includes an adjusting bolt 191, a limiting ring 192, and a nut 193. The inner wall of the second circular hole 18 and one side of the column 131 are in contact with the surface of the adjusting bolt 191. The other side of the column 131 is in contact with the side of the limiting ring 192. The inner wall of the limiting ring 192 is fixedly connected to the surface of the adjusting bolt 191. The surface of the adjusting bolt 191 is threadedly connected to the inner wall of the nut 193. The bottom of the nut 193 is fixedly connected to the upper surface of the cylinder 20.

[0035] It should be noted that the limiting ring 192 prevents the adjusting bolt 191 from sliding horizontally within the second circular hole 18. When the adjusting bolt 191 rotates, the distance between the cylinder 20 and the column 131 can be changed by the cooperation of the adjusting bolt 191 and the nut 193, and the tension of the second spring 15 on the cylinder 20 can be changed. At this time, by changing the tension of the second spring 15 on the cylinder 20, the impact force of the hammer block 136 on the first trapezoidal block 104 can be changed. Thus, the injection mold can adjust the magnitude of the impact force of the hammer block 136 on the first trapezoidal block 104 according to the material of the raw material, so that the molded base will not have defects such as cracks, deformation or scratches.

[0036] The working principle of this utility model is as follows: First, the injection mold is fixed on the injection molding machine. Then, the column 131 is pushed by the electric push rod 17 to make the column 131 and the actuating frame 16 misaligned. Then, the upper mold frame 5 and the lower mold frame 3 are combined together. The upper mold frame 5 presses the pressing column 103 to make the top of the ejector rod 102 be at the lowest position. At the same time, the length of the electric push rod 17 is shortened to the initial value and the electric push rod 17 is separated from the column 131. Then, the raw material is injected into the mold cavity composed of the upper mold core 6 and the lower mold core 4 through the flow channel on the top plate 7 and the upper mold frame 5.

[0037] After the raw material cools and solidifies, the upper mold frame 5 is moved upwards, separating it from the lower mold frame 3. The tension of the first spring 11 on the horizontal plate 101 causes the ejector rod 102 to apply an upward force to the solidified base. Simultaneously, as the upper mold frame 5 moves upwards, it drives the actuating frame 16 upwards. Through the inclined surface above the second trapezoidal block 162, the second trapezoidal block 162 automatically separates from the trapezoidal groove 132 during the upward movement of the upper mold frame 5. When the second trapezoidal block 162 contacts the side of the column 131, the second spring 15 is stretched. Then, when the second trapezoidal block 162 aligns with the trapezoidal groove 132, the second spring 15 is stretched. The tension of the second spring 15 on the column 131 enables the hammer block 136 to impact the side of the first trapezoidal block 104. Furthermore, by providing multiple trapezoidal grooves 132 on the column 131, the hammer block 136 can impact the side of the first trapezoidal block 104 multiple times. At this time, the hammering force applied by the hammer block 136 to the inclined surface of the first trapezoidal block 104 causes the ejector rod 102 to apply multiple instantaneous impact forces to the molded base. Then, the impact force loosens the molded base from the lower mold core 4. Simultaneously, the upward pushing force applied by the ejector rod 102 to the molded base can separate the molded base from the lower mold core 4.

[0038] When it is necessary to adjust the hammering force of the hammering block 136 on the first trapezoidal block 104, the distance between the cylinder 20 and the column 131 is changed by rotating the adjusting bolt 191 under the action of the adjusting bolt 191 and the nut 193. When the distance between the cylinder 20 and the column 131 increases, the tension of the second spring 15 on the cylinder 20 decreases, and the hammering force of the hammering block 136 on the first trapezoidal block 104 decreases. When the distance between the cylinder 20 and the column 131 decreases, the tension of the second spring 15 on the cylinder 20 increases, and the hammering force of the hammering block 136 on the first trapezoidal block 104 increases.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A base injection mold, characterized in that: The system includes a base plate (1), a square iron (2) fixedly connected to the upper surface of the base plate (1), a lower mold frame (3) fixedly connected to the upper surface of the square iron (2), a lower mold core (4) fixedly connected to the inner wall of the lower mold frame (3), an upper mold frame (5) fitted to the upper surface of the lower mold frame (3), an upper mold core (6) fixedly connected to the inner wall of the upper mold frame (5), a top plate (7) fixedly connected to the upper surface of the upper mold frame (5), ejection holes (8) are provided inside the lower mold frame (3) and the lower mold core (4), a first circular hole (9) is provided inside the lower mold frame (3), and ejection brackets (10) are fitted to the bottom of the upper mold frame (5), the inner wall of the first circular hole (9), and the inner wall of the ejection hole (8). A first spring (11) is fixedly connected to the upper surface of the ejector bracket (10) and the bottom of the lower mold frame (3). A T-shaped column (12) is fixedly connected to the upper surface of the base plate (1). A hammering bracket (13) is attached to the surface of the T-shaped column (12) and the side of the ejector bracket (10). A connecting block (14) is fixedly connected to the upper surface of the T-shaped column (12). A second spring (15) is fixedly connected to the left and right sides of the connecting block (14) and the side of the hammering bracket (13). A toggle frame (16) is fixedly connected to the left and right sides of the upper mold frame (5). The surface of the toggle frame (16) is attached to the inner wall of the hammering bracket (13). An electric push rod (17) is fixedly connected to the left and right sides of the connecting block (14).

2. The base injection mold according to claim 1, characterized in that: The ejector bracket (10) includes a horizontal plate (101), an ejector rod (102), a pressing column (103), and a first trapezoidal block (104). The bottom of the first spring (11), the bottom of the ejector rod (102), and the bottom of the pressing column (103) are all fixedly connected to the upper surface of the horizontal plate (101). The surface of the ejector rod (102) is in contact with the inner wall of the ejector hole (8). The surface of the pressing column (103) is in contact with the inner wall of the first circular hole (9). The bottom of the upper mold frame (5) is in contact with the upper surface of the pressing column (103). The upper surface of the first trapezoidal block (104) is fixedly connected to the bottom of the horizontal plate (101). The inclined surface of the first trapezoidal block (104) is in contact with the side of the hammering bracket (13).

3. The base injection mold according to claim 2, characterized in that: The hammering bracket (13) includes a column (131), a trapezoidal groove (132), a U-shaped plate (133), a limiting post (134), a connecting post (135), and a hammering block (136). The side of the column (131) is fixedly connected to the side of the second spring (15). The trapezoidal groove (132) is opened on the side of the column (131). The inner wall of the trapezoidal groove (132) is in contact with the surface of the actuating frame (16). The bottom of the column (131) is in contact with the upper part of the U-shaped plate (133). The surfaces are fixedly connected, the inner wall of the U-shaped plate (133) is attached to the surface of the T-shaped column (12), the front and rear sides of the inner wall of the U-shaped plate (133) are fixedly connected to the surface of the limiting column (134), the surface of the limiting column (134) is attached to the surface of the T-shaped column (12), the two ends of the connecting column (135) are fixedly connected to the side of the column (131) and the side of the hammer block (136) respectively, and the inclined surface of the first trapezoidal block (104) is attached to the side of the hammer block (136).

4. The base injection mold according to claim 3, characterized in that: The actuating frame (16) includes a U-shaped column (161) and a second trapezoidal block (162). The left and right sides of the upper mold frame (5) are fixedly connected to the side of the U-shaped column (161). The surface of the U-shaped column (161) is fixedly connected to the inner wall of the second trapezoidal block (162). The surface of the second trapezoidal block (162) is in contact with the inner wall of the trapezoidal groove (132).

5. The base injection mold according to claim 3, characterized in that: The column (131) has a second circular hole (18) inside. Adjustment brackets (19) are attached to the inner wall of the second circular hole (18) and the left and right sides of the column (131). A cylinder (20) is fixedly connected to the bottom of the adjustment bracket (19). The inner wall of the cylinder (20) is fixedly connected to the surface of the second spring (15).

6. The base injection mold according to claim 5, characterized in that: The adjusting bracket (19) includes an adjusting bolt (191), a limiting ring (192), and a nut (193). The inner wall of the second circular hole (18) and one side of the column (131) are both in contact with the surface of the adjusting bolt (191). The other side of the column (131) is in contact with the side of the limiting ring (192). The inner wall of the limiting ring (192) is fixedly connected to the surface of the adjusting bolt (191). The surface of the adjusting bolt (191) is threadedly connected to the inner wall of the nut (193). The bottom of the nut (193) is fixedly connected to the upper surface of the cylinder (20).

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