Clamping and positioning device for in-mold insert injection mold

Abstract

The utility model belongs to the technical field of molds, and discloses an in-mold insert injection mold clamping and positioning device which comprises a lower mold and an upper mold, an in-mold insert body is movably installed on the inner wall of the top of the lower mold, and driving top frames located in front of and behind the bottom of the in-mold insert body are fixedly installed on the inner wall of the lower mold. Through the driving top frame and the clamping block, during installation, the groove hole in the outer side of the in-mold insert body corresponds to the positioning insertion rod and is downwards inserted into the top of a lower mold, and then the driving top frame is pushed downwards, so that a first piston rod downwards pushes air in an inner cavity of an air cylinder into an air groove through a ventilation groove channel; and the air pressure in the air groove is increased, so that the two second piston rods and the clamping blocks can be smoothly pushed to move oppositely, and finally, the two clamping blocks are oppositely clamped in notches in the outer side of the in-mold insert body, and the whole in-mold insert body is rapidly positioned and fixed to the top of a lower mold.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, in particular to a clamping and positioning device for an injection mold with an in-mold insert. Background Art

[0002] The design of in-mold inserts usually needs to be customized according to the specific needs of the mold. Except for the pins that can be ordered as standard parts, the other inserts such as blocks, columns, rings, etc. need to be made according to the actual needs of the mold. The parts of the mold that often need to be modified can be designed as inserts, so that only the inserts need to be replaced when modifications are needed. The existing in-mold inserts are fixed to the mold with screws and nuts. Therefore, when disassembling and installing, they need to be rotated in sequence for installation, and there is a lack of positioning during installation, which can easily cause offset, so they need to be improved. Utility Model Content

[0003] In order to solve the problems raised in the above background technology, the utility model provides a clamping and positioning device for an injection mold of an in-mold insert.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping and positioning device for an in-mold insert injection mold, comprising a lower mold and an upper mold, the inner wall at the top of the lower mold is movably mounted with an in-mold insert body, the inner wall of the lower mold is fixedly mounted with a driving top frame located at the front and rear sides of the bottom of the in-mold insert body, the inner wall of the lower mold is fixedly mounted with an air cylinder located in the middle of the bottom end of the driving top frame, the bottom end of the driving top frame is fixedly mounted with a first piston rod located in the inner cavity of the air cylinder, the top of the bottom end of the first piston rod is fixedly mounted with a return spring, the top end of the return spring is fixedly connected to the inner wall of the air cylinder, an air groove located at the front and rear sides of the in-mold insert body is provided inside the lower mold, a second piston rod is movably mounted on the inner cavity of the air groove, a block located on the inner wall of the in-mold insert body is fixedly mounted on the inner end of the second piston rod, and a ventilation groove located between the middle of the bottom end of the air cylinder and the outer side of the bottom of the air groove is provided inside the lower mold.

[0005] Preferably, the block is rectangular in shape, and the size of the block is matched with the size of the front and rear end notches of the in-mold insert body.

[0006] Preferably, there are two return springs, and the two return springs have the same size.

[0007] Preferably, a positioning rod is fixedly installed on the top of the lower mold and is located just above the driving top frame and inside the mold insert body.

[0008] Preferably, a linkage frame located at the front and rear of the lower mold is fixedly installed at the middle part of the outer side of the second piston rod, and a triangular plate is fixedly installed at the inner side of the left end of the linkage frame.

[0009] Preferably, a fixing frame located at the bottom left side of the triangular plate is fixedly installed on the left side of the lower mold, a rotating rod is movably sleeved on the top of the fixing frame, the right end of the rotating rod passes through the fixing frame and a driving disc is fixedly sleeved on the surface, and a groove is opened on the surface of the rotating rod.

[0010] Preferably, the left side of the lower mold is slidably connected with a driving plate located between the triangular plate and the top of the driving disc, a groove is opened in the middle of the driving plate, and the driving plate is movably connected to the top of the right end of the driving disc, and the right end of the outer side of the driving plate extends to the inner wall of the triangular plate and is movably connected to the inner wall of the triangular plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model drives the top frame and the clamping block. During installation, the outer groove hole of the in-mold insert body can be inserted downward to the top of the lower mold corresponding to the positioning plug rod, and then the driving top frame will be pushed downward, so that the first piston rod pushes the gas in the inner cavity of the gas cylinder downward to the inside of the gas groove through the ventilation groove, so as to increase the gas pressure in the gas groove, thereby smoothly pushing the two second piston rods and the clamping blocks to move in opposite directions, and finally making the two clamping blocks clamped in the outer groove of the in-mold insert body facing each other, so that the in-mold insert body as a whole is quickly positioned and fixed on the top of the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the lower mold of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0016] Figure 4 It is a schematic cross-sectional structure diagram of the ventilation channel of the utility model;

[0017] Figure 5 It is a partial structural schematic diagram of the linkage frame of the utility model.

[0018] In the figure: 1. lower mold; 2. upper mold; 3. injection head; 4. in-mold insert body; 5. positioning rod; 6. driving top frame; 7. air cylinder; 8. first piston rod; 9. air groove; 10. ventilation channel; 11. second piston rod; 12. block; 13. linkage frame; 14. triangle plate; 15. driving plate; 16. fixed frame; 17. rotating rod; 18. driving disc; 19. return spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figures 1 to 5 As shown, the utility model provides a clamping and positioning device for an in-mold insert injection mold, comprising a lower mold 1 and an upper mold 2, an in-mold insert body 4 is movably mounted on the inner wall at the top of the lower mold 1, a driving top frame 6 located at the front and rear of the bottom of the in-mold insert body 4 is fixedly mounted on the inner wall of the lower mold 1, an air cylinder 7 located in the middle of the bottom end of the driving top frame 6 is fixedly mounted on the inner wall of the lower mold 1, a first piston rod 8 located in the inner cavity of the air cylinder 7 is fixedly mounted at the bottom end of the driving top frame 6, a return spring 19 is fixedly mounted at the top of the bottom end of the first piston rod 8, the top end of the return spring 19 is fixedly connected to the inner wall of the air cylinder 7, an air groove 9 located at the front and rear of the in-mold insert body 4 is provided inside the lower mold 1, a second piston rod 11 is movably mounted in the inner cavity of the air groove 9, a block 12 located on the inner wall of the in-mold insert body 4 is fixedly mounted on the inner end of the second piston rod 11, and a ventilation channel 10 located between the middle of the bottom end of the air cylinder 7 and the outer side of the bottom of the air groove 9 is provided inside the lower mold 1.

[0021] When the driving top frame 6 is squeezed downward by the in-mold insert body 4 as a whole, the first piston rod 8 can slide downward in the inner cavity of the gas cylinder 7, so that the gas at the bottom of the inner cavity of the gas cylinder 7 is discharged through the ventilation channel 10 and then enters the inner cavity of the gas groove 9, so that the gap at the outer end of the inner cavity of the gas groove 9 becomes larger and filled with gas, thereby squeezing the two second piston rods 11 and the block 12 to move toward each other.

[0022] like Figure 4 As shown, the block 12 is rectangular in shape, and the size of the block 12 matches the size of the front and rear end slots of the in-mold insert body 4 .

[0023] By adopting the above solution, when the two second piston rods 11 are clamped in the front and rear notches of the in-mold insert body 4 facing each other, the in-mold insert body 4 can be clamped and fixed on the top of the lower mold 1 as a whole.

[0024] like Figure 3 As shown, there are two return springs 19 , and the two return springs 19 have the same size.

[0025] By adopting the above scheme, a return spring 19 is provided. When the driving top frame 6 drives the first piston rod 8 as a whole downward, the return spring 19 will be pulled. When the downward force is released, the tension of the return spring 19 will be released, thereby driving the first piston rod 8 and the driving top frame 6 to reset upward as a whole.

[0026] like Figure 2 and Figure 4 As shown, a positioning rod 5 is fixedly installed on the top of the lower mold 1 and is located just above the driving top frame 6 and inside the mold insert body 4.

[0027] By adopting the above solution, by providing the positioning rod 5, when the operator is installing the in-mold insert body 4, the outer slot of the in-mold insert body 4 can be inserted downward corresponding to the positioning rod 5 to achieve installation and positioning of the in-mold insert body 4.

[0028] like Figure 2 and Figure 5 As shown, a linkage frame 13 located at the front and rear of the lower mold 1 is fixedly installed in the middle of the outer side of the second piston rod 11, and a triangular plate 14 is fixedly installed on the inner side of the left end of the linkage frame 13;

[0029] A fixing frame 16 located at the left bottom of the triangular plate 14 is fixedly installed on the left side of the lower mold 1, and a rotating rod 17 is movably sleeved on the top of the fixing frame 16. The right end of the rotating rod 17 passes through the fixing frame 16 and a driving disc 18 is fixedly sleeved on the surface. A groove is opened on the surface of the rotating rod 17.

[0030] By adopting the above solution, the notches on the surface of the rotating rod 17 are designed, so that the friction force with the hand can be greatly improved, and the rotating rod 17 can be smoothly twisted to drive the driving disc 18 to rotate.

[0031] like Figure 5 As shown, the left side of the lower mold 1 is slidably connected with a driving plate 15 located between the triangular plate 14 and the top of the driving disc 18. A groove is opened in the middle of the driving plate 15, and it is movably connected to the top of the right end of the driving disc 18. The right end of the outer side of the driving plate 15 extends to the inner wall of the triangular plate 14 and is movably connected to the inner wall of the triangular plate 14.

[0032] By adopting the above scheme, a driving plate 15 is provided. When the operator twists the rotating rod 17 by hand to drive the driving disc 18 to rotate, the top right end of the driving disc 18 can slide in the groove of the driving plate 15 to drive the driving plate 15 to move downward. Then, the outer right end of the driving plate 15 will slide downward along the inner wall of the triangular plate 14 and squeeze the two triangular plates 14 to drive the linkage frame 13, the second piston rod 11 and the block 12 to move away from each other.

[0033] The working principle and use process of this utility model:

[0034] First, the operator can align the slot hole of the in-mold insert body 4 with the upper positioning rod 5 and insert it downward into the inner cavity at the top of the lower mold 1, and then squeeze and push the driving top frame 6 to drive the first piston rod 8 to move downward as a whole, so that the gas in the inner cavity of the first piston rod 8 is pushed to the inner cavity of the air groove 9 through the ventilation channel 10, so as to smoothly drive the two second piston rods 11 and the clamping block 12 to move towards each other, so that the clamping block 12 is clamped in the slot on the outside of the in-mold insert body 4, and the in-mold insert body 4 is quickly positioned, clamped and fixed on the top of the lower mold 1, and then the lower mold 1 and the upper mold 2 can be installed on the injection molding device, so that the upper mold 2 is pressed down to fit the lower mold 1, and the plastic fluid is injected through the injection molding head 3 to achieve the injection molding purpose.

[0035] Then, when the in-mold insert body 4 needs to be removed for replacement, the operator can manually twist the rotating rod 17 to drive the driving disc 18 to rotate and drive the driving plate 15 to move downward as a whole. At this time, the rear ends of both sides of the driving plate 15 will squeeze the two triangular plates 14 to drive the linkage frame 13, the second piston rod 11 and the block 12 to move in opposite directions, so that the block 12 can be separated from the inner wall of the in-mold insert body 4 to release the clamping fixation of the in-mold insert body 4, and then the pulling force of the reset spring 19 can drive the first piston rod 8 and the driving ejector frame 6 to push the in-mold insert body 4 upward, and then the in-mold insert body 4 can be taken down for subsequent replacement.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping and positioning device for an in-mold injection mold, characterized in that: The invention comprises a lower mold (1) and an upper mold (2), wherein an in-mold insert body (4) is movably mounted on the inner wall at the top of the lower mold (1), a driving top frame (6) located at the front and rear of the bottom of the in-mold insert body (4) is fixedly mounted on the inner wall of the lower mold (1), an air cylinder (7) located at the middle of the bottom end of the driving top frame (6) is fixedly mounted on the inner wall of the lower mold (1), a first piston rod (8) located in the inner cavity of the air cylinder (7) is fixedly mounted at the bottom end of the driving top frame (6), and a reset spring is fixedly mounted on the top of the bottom end of the first piston rod (8). A spring (19) is provided inside the lower mold (1), the top end of the return spring (19) is fixedly connected to the inner wall of the air cylinder (7), an air groove (9) is provided inside the lower mold (1) and is located in front and behind the in-mold insert body (4), a second piston rod (11) is movably installed in the inner cavity of the air groove (9), and a block (12) located on the inner wall of the in-mold insert body (4) is fixedly installed at the inner end of the second piston rod (11), and a ventilation channel (10) is provided inside the lower mold (1) and is located between the middle of the bottom end of the air cylinder (7) and the outer side of the bottom of the air groove (9).

2. The in-mold insert injection mold clamping and positioning device according to claim 1, characterized in that: The block (12) has a rectangular shape, and the size of the block (12) is compatible with the size of the front and rear end notches of the in-mold insert body (4).

3. The in-mold insert injection mold clamping and positioning device according to claim 1, characterized in that: The number of the return springs (19) is two, and the two return springs (19) have the same size.

4. The in-mold insert injection mold clamping and positioning device according to claim 1, characterized in that: A positioning rod (5) is fixedly installed on the top of the lower mold (1) and is located directly above the driving top frame (6) and inside the mold insert body (4).

5. The in-mold insert injection mold clamping and positioning device according to claim 1, characterized in that: A linkage frame (13) located at the front and rear of the lower mold (1) is fixedly installed in the middle of the outer side of the second piston rod (11), and a triangular plate (14) is fixedly installed on the inner side of the left end of the linkage frame (13).

6. The in-mold insert injection mold clamping and positioning device according to claim 1, characterized in that: A fixing frame (16) is fixedly installed on the left side of the lower mold (1) and is located at the bottom of the left side of the triangular plate (14). A rotating rod (17) is movably sleeved on the top of the fixing frame (16). The right end of the rotating rod (17) passes through the fixing frame (16) and a driving disc (18) is fixedly sleeved on the surface. A notch is provided on the surface of the rotating rod (17).

7. The in-mold insert injection mold clamping and positioning device according to claim 1, characterized in that: The left side of the lower mold (1) is slidably connected to a driving plate (15) located between the triangular plate (14) and the top of the driving disc (18); a groove is provided in the middle of the driving plate (15) and is movably connected to the top of the right end of the driving disc (18); the right end of the outer side of the driving plate (15) extends to the inner wall of the triangular plate (14) and is movably connected to the inner wall of the triangular plate (14).

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