Positioning device for injection molding of automobile panel

Abstract

The utility model relates to the field of injection molds, and discloses an automobile panel injection molding positioning device which comprises an upper mold, a lower mold is arranged on the bottom face of the upper mold, upper connecting blocks are fixedly installed on the left side and the right side of the upper mold correspondingly, and lower positioning blocks are fixedly installed on the left side and the right side of the lower mold correspondingly; the top face of the lower positioning block is provided with a positioning hole corresponding to the upper connecting block, the bottom end of the upper connecting block is inserted into the positioning hole, when the device is in a normal working state, when the upper connecting block is inserted into the lower positioning block, the lengths of the connecting circular shafts on the two sides need to be kept consistent, and if the positioning pin is abraded or the position of the mold deviates, the positioning pin can be fixed. When the upper die and the lower die are assembled, the inserting position of the upper connecting block is changed, the lengths of the connecting circular shafts on the two sides are different, an operator can visually measure the offset after the upper die and the lower die are assembled by observing the graduated scale, and therefore adjustment is conducted in time to ensure the product quality.

Description

Technical Field

[0001] The present application belongs to the technical field of injection molds, and in particular relates to an injection molding positioning device for an automobile panel. Background Art

[0002] The automobile panel injection molding positioning device is used to ensure the precise positioning of the automobile panel during the injection molding process. This is usually achieved through positioning pins or other positioning structures in the mold design. During the injection molding process, the mold will ensure the correct position of the automobile panel so that the plastic material can be accurately injected and obtain the correct shape and size after cooling.

[0003] In reality, the automobile panel injection mold consists of a fixed mold and a movable mold, and the fixed mold and the movable mold are accurately positioned and assembled through the cooperation of positioning pins and positioning holes, so as to improve the molding quality of the automobile panel after injection molding. However, when the automobile panel injection mold uses positioning pins for long-term positioning, the positioning pins will cause mold position deviation due to wear. This deviation gradually accumulates, and the operator is generally unable to directly observe it well, thereby affecting the quality of subsequent products. For this purpose, an automobile panel injection positioning device is provided. Utility Model Content

[0004] The purpose of the present application is to provide an automobile panel injection molding positioning device in order to solve the above-mentioned problems.

[0005] The technical solution adopted in the present application is as follows: an automobile panel injection molding positioning device comprises an upper mold, a lower mold is arranged on the bottom surface of the upper mold, upper connecting blocks are fixedly installed on the left and right sides of the upper mold, and lower positioning blocks are fixedly installed on the left and right sides of the lower mold, a positioning hole corresponding to the upper connecting block is opened on the top surface of the lower positioning block, the bottom end of the upper connecting block is inserted into the inside of the positioning hole, two mounting vertical plates are fixedly installed inside the lower positioning block, and a fixing plate is arranged on the side of the two mounting vertical plates away from each other, an offset pin is fixedly installed on the side of the fixing plate close to the mounting vertical plate, one end of the offset pin passes through one side of the mounting vertical plate, one end of the offset pin abuts against the side of the upper connecting block, a spring is fixedly installed on the end of the mounting vertical plate away from the offset pin, one end of the spring is fixed to the inner side wall of the lower positioning block, a connecting circular shaft is fixedly installed on the end of the mounting vertical plate away from the offset pin, one end of the connecting circular shaft extends to the outside of the lower positioning block, and a scale is fixedly installed on the outer surface of the connecting circular shaft.

[0006] In a preferred embodiment, four positioning pins are fixedly installed on the top surface of the lower mold near the corners, and four second positioning holes corresponding to the positioning pins are opened on the top surface of the upper mold near the corners, and the positioning pins are inserted into the inside of the second positioning holes.

[0007] In a preferred embodiment, a threaded hole is provided on the front side of the upper connecting block, a fixing bolt is provided through the front side of the lower positioning block, and one end of the fixing bolt is threadedly connected to the inside of the threaded hole.

[0008] In a preferred embodiment, a U-shaped cooling pipe is fixedly installed inside the lower mold, and a pipe connector is fixedly installed at the front end of the U-shaped cooling pipe.

[0009] In a preferred embodiment, a plurality of lifting rings are fixedly mounted on the left and right sides of the upper mold respectively.

[0010] In a preferred embodiment, a supporting base plate is fixedly mounted on the bottom surface of the lower mold.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0012] 1. In the present application, due to the adoption of the above-mentioned scheme, when the upper mold and the lower mold are tightly fitted, the upper connecting block enters the interior of the lower positioning block through the positioning hole opened at the top of the lower mold. At this time, the offset pin will move toward the direction of the installation vertical plate, thereby triggering the fixed plate to push the connecting circular shaft to move to the outside of the lower positioning block. This design allows the operator to judge the degree of wear of the positioning pin or whether the mold alignment is accurate by observing the scale installed on the connecting circular shaft extending from both sides of the lower positioning block. When the device is in normal working condition, when the upper connecting block is inserted into the interior of the lower positioning block, the lengths of the connecting circular shafts on both sides should remain consistent. If the positioning pin is worn or the mold position is offset, the insertion position of the upper connecting block will change, resulting in a difference in the lengths of the connecting circular shafts on both sides. By observing the scale, the operator can intuitively measure the offset of the upper and lower molds after assembly, and make timely adjustments to ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of this application;

[0014] Figure 2 This is a schematic diagram of the upper connection block structure of the present application;

[0015] Figure 3 This is a schematic diagram of the internal structure of the lower positioning block of this application.

[0016] Markings in the figure: 1. Upper mold; 2. Lower mold; 3. Upper connecting block; 4. Lower positioning block; 5. Positioning hole; 6. Mounting vertical plate; 7. Fixed plate; 8. Offset; 9. Spring; 10. Connecting circular shaft; 11. Scale; 12. Positioning pin; 13. Second positioning hole; 14. Threaded hole; 15. Fixing bolt; 16. U-shaped cooling pipe; 17. Pipe connector; 18. Lifting ring; 19. Support base plate. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] refer to Figure 1 , Figure 2 and Figure 3 A positioning device for automobile panel injection molding comprises an upper mold 1, a plurality of lifting rings 18 are fixedly installed on the left and right sides of the upper mold 1, a lower mold 2 is arranged on the bottom surface of the upper mold 1, and a supporting bottom plate 19 is fixedly installed on the bottom surface of the lower mold 2; a convex module is installed on the bottom of the upper mold 1, and a mold cavity corresponding to the convex module is opened on the top surface of the lower mold 2, so that it is convenient for personnel to let the molten injection liquid enter the interior of the mold cavity to realize the injection molding operation of the automobile panel.

[0019] refer to Figure 2 , Figure 3 Upper connecting blocks 3 are fixedly installed on the left and right sides of the upper mold 1, and lower positioning blocks 4 are fixedly installed on the left and right sides of the lower mold 2. A positioning hole 5 corresponding to the upper connecting block 3 is opened on the top surface of the lower positioning block 4, and the bottom end of the upper connecting block 3 is inserted into the interior of the positioning hole 5; the upper connecting block 3 passes through the interior of the positioning hole 5 and is inserted into the lower positioning block 4, which facilitates the positioning and assembly of the upper mold 1 and the lower mold 2.

[0020] refer to Figure 2 , Figure 3 Two mounting vertical plates 6 are fixedly installed inside the lower positioning block 4, and a fixing plate 7 is provided on the side of the two mounting vertical plates 6 that are away from each other. A counter-pin 8 is fixedly installed on the side of the fixing plate 7 close to the mounting vertical plate 6. One end of the counter-pin 8 passes through one side of the mounting vertical plate 6, and one end of the counter-pin 8 abuts against the side of the upper connecting block 3; the front end of the counter-pin 8 is a semicircular structure, and the bottom end of the upper connecting block 3 is an arc structure, so that the upper connecting block 3 is convenient for the counter-pin 8 to move toward the direction of the mounting vertical plate 6 when the upper connecting block 3 is inserted into the interior of the lower positioning block 4.

[0021] refer to Figure 2 , Figure 3A spring 9 is fixedly installed on one end of the mounting vertical plate 6 away from the offset 8, and one end of the spring 9 is fixed to the inner side wall of the lower positioning block 4. A connecting circular shaft 10 is fixedly installed on one end of the mounting vertical plate 6 away from the offset 8. One end of the connecting circular shaft 10 extends to the outside of the lower positioning block 4, and a scale 11 is fixedly installed on the outer surface of the connecting circular shaft 10; the spring 9 is arranged to facilitate the reset of the fixed plate 7 and the offset 8, and the connecting circular shaft 10 is arranged to extend to the outside of the lower positioning block 4, so that it is convenient for personnel to observe the scale 11 on the outer surface of the connecting circular shaft 10, so that it is convenient for personnel to judge whether the positioning mechanism is worn.

[0022] refer to Figure 1 , Figure 2 Four locating pins 12 are fixedly installed on the top surface of the lower mold 2 near the corners, and four second locating holes 13 corresponding to the locating pins 12 are opened on the top surface of the upper mold 1 near the corners, and the locating pins 12 are inserted into the inside of the second locating holes 13; the four locating pins 12 and the second locating holes 13 are set to facilitate the precise positioning and assembly of the upper mold 1 and the lower mold 2, thereby improving the injection molding quality of subsequent products.

[0023] refer to Figure 1 , Figure 2 and Figure 3 A threaded hole 14 is provided on the front side of the upper connecting block 3, and a fixing bolt 15 is provided on the front side of the lower positioning block 4, and one end of the fixing bolt 15 is threadedly connected to the inside of the threaded hole 14; by threading one end of the fixing bolt 15 to the inside of the threaded hole 14, it is convenient to fix the upper connecting block 3 inserted in the lower positioning block 4, so that the upper mold 1 and the lower mold 2 can be connected and fixed together.

[0024] refer to Figure 1 A U-shaped cooling pipe 16 is fixedly installed inside the lower mold 2, and a pipe connector 17 is fixedly installed at the front end of the U-shaped cooling pipe 16; the pipe connector 17 is provided with two, one is a liquid inlet pipe and the other is a liquid outlet pipe. The coolant enters the interior of the U-shaped cooling pipe 16 through the liquid inlet pipe connector 17 to achieve heat replacement of the lower mold 2, and then is discharged from the liquid outlet pipe connector 17 for circulation, thereby improving the demolding effect of the injection molded automobile panel in the mold cavity of the lower mold 2.

[0025] The implementation principle of the embodiment of the automobile panel injection molding positioning device of the present application is as follows: during the molding process using the automobile panel injection mold, the operator first inserts the positioning pin 12 on the lower mold 2 into the second positioning hole 13 of the upper mold 1, and then moves the upper mold 1 downward to achieve precise docking with the positioning pin 12 on the lower mold 2. When the upper mold 1 is tightly fitted with the lower mold 2, the upper connecting block 3 enters the interior of the lower positioning block 4 through the positioning hole 5 opened on the top of the lower mold 2;

[0026] Since the bottom end of the upper connecting block 3 is designed to be arc-shaped, when it is inserted into the lower positioning block 4, it will push the offset pin 8 to move toward the mounting vertical plate 6, thereby triggering the fixing plate 7 to push the connecting circular shaft 10 to move outside the lower positioning block 4. This design allows the operator to judge the degree of wear of the positioning pin 12 or whether the mold alignment is accurate by observing the scales 11 installed on the connecting circular shaft 10 extending from both sides of the lower positioning block 4;

[0027] The device has a simple structure and is easy to operate. Under normal working conditions, when the upper connecting block 3 is inserted into the lower positioning block 4, the lengths of the connecting circular shafts 10 on both sides should remain consistent. If the positioning pin 12 is worn or the mold position is offset, the insertion position of the upper connecting block 3 will change, resulting in a difference in the lengths of the connecting circular shafts 10 on both sides. By observing the scale 11, the operator can intuitively measure the offset of the upper mold 1 and the lower mold 2 after assembly, so as to make timely adjustments to ensure product quality.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automobile panel injection molding positioning device, comprising an upper mold (1), characterized in that: The bottom surface of the upper mold (1) is provided with a lower mold (2), upper connecting blocks (3) are fixedly installed on the left and right sides of the upper mold (1), and lower positioning blocks (4) are fixedly installed on the left and right sides of the lower mold (2), respectively. A positioning hole (5) corresponding to the upper connecting block (3) is opened on the top surface of the lower positioning block (4), and the bottom end of the upper connecting block (3) is inserted into the inside of the positioning hole (5). Two mounting vertical plates (6) are fixedly installed inside the lower positioning block (4), and the two mounting vertical plates (6) are each provided with a fixing plate (7) on a side away from each other, and the fixing plate (7) is close to the mounting vertical plates. A pin (8) is fixedly mounted on one side of the mounting vertical plate (6), one end of the pin (8) passes through one side of the mounting vertical plate (6), one end of the pin (8) abuts against the side of the upper connecting block (3), a spring (9) is fixedly mounted on the end of the mounting vertical plate (6) away from the pin (8), one end of the spring (9) is fixed to the inner side wall of the lower positioning block (4), a connecting circular shaft (10) is fixedly mounted on the end of the mounting vertical plate (6) away from the pin (8), one end of the connecting circular shaft (10) extends to the outside of the lower positioning block (4), and a scale (11) is fixedly mounted on the outer surface of the connecting circular shaft (10).

2. An automobile panel injection molding positioning device as claimed in claim 1, characterized in that: Four positioning pins (12) are fixedly mounted on the top surface of the lower mold (2) near the corners, and four second positioning holes (13) corresponding to the positioning pins (12) are opened on the top surface of the upper mold (1) near the corners, and the positioning pins (12) are inserted into the inside of the second positioning holes (13).

3. The automobile panel injection molding positioning device according to claim 1, characterized in that: A threaded hole (14) is provided on the front side of the upper connection block (3), and a fixing bolt (15) is provided through the front side of the lower positioning block (4), with one end of the fixing bolt (15) being threadedly connected to the inside of the threaded hole (14).

4. The automobile panel injection molding positioning device according to claim 1, characterized in that: A U-shaped cooling pipe (16) is fixedly installed inside the lower mold (2), and a pipe connector (17) is fixedly installed at the front end of the U-shaped cooling pipe (16).

5. The automobile panel injection molding positioning device according to claim 1, characterized in that: A plurality of lifting rings (18) are fixedly mounted on the left and right sides of the upper mold (1).

6. The automobile panel injection molding positioning device according to claim 1, characterized in that: A supporting bottom plate (19) is fixedly mounted on the bottom surface of the lower mould (2).

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