Injection mold assembly with waste ejection structure

Abstract

The utility model discloses an injection mold assembly with a waste ejection structure, which comprises an upper mold plate and a lower mold plate, the upper mold plate is provided with a male mold, the lower mold plate is provided with a female mold matched with the male mold at a position corresponding to the male mold, the female mold is provided with a positioning groove for positioning a metal insert, and the positioning groove is provided with a waste ejection structure. A cutter capable of cutting off a metal insert connecting strip is arranged on the upper die plate, a receding groove is formed in the position, corresponding to the positioning groove, of the female die, an ejection mechanism used for separating a metal insert from the positioning groove is arranged on the lower die plate, the ejection mechanism is arranged, follow-up waste can be conveniently separated from the positioning groove, and operation is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold assembly with a waste ejection structure. Background Art

[0002] Generally, the electric window switch is composed of multiple assembly parts, each of which is installed on the circuit board. Figure 6 As shown: including a plastic shell and a pin set on the plastic shell, generally two molds are required to process the assembly parts, and three processes are required: stamping → injection molding → stamping. After the first mold is formed, a metal insert is formed, such as Figure 7 As shown: it has pins, an outer frame and connecting strips. The metal insert is injection molded and stamped by the second mold. The pin part of the metal insert is injection molded in the plastic shell, and the excess connecting strips and frames are cut off to form the final assembly component product.

[0003] Positioning grooves are usually set on the mold to position the metal inserts. The waste after punching is usually ejected simultaneously with the product, but it will cause the waste to scratch the product, so it is necessary to manually handle the waste later. Since the waste is embedded in the positioning groove, manual operation is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide an injection mold assembly with a waste ejection structure.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold assembly with a waste ejection structure, comprising an upper template and a lower template, the upper template is provided with a convex mold, the lower template is provided with a concave mold adapted to the convex mold at a position corresponding to the convex mold, a molding cavity for injection molding assembly parts is formed between the convex mold and the concave mold, a positioning groove for positioning a metal insert is provided on the concave mold, a cutter for cutting off a metal insert connecting strip is provided on the upper template, an air avoidance groove is provided at the position corresponding to the positioning groove of the concave mold, and an ejection mechanism for separating the metal insert from the positioning groove is provided on the lower template, and the air avoidance groove is connected to the metal insert. Corresponding to the insert, the ejection mechanism includes a slider, a seesaw, a push-pull electromagnet and a control switch, the control switch is electrically connected to the push-pull electromagnet, a slide groove for the slider to move is arranged on the lower template, the seesaw is installed on the inner side of the slider and the end of the seesaw extends into the avoidance groove, a compression spring is arranged between the bottom wall of the slide groove and the bottom of the slider, the push-pull electromagnet is arranged on one side of the slider and installed on the lower template, and a positioning hole for the push rod of the push-pull electromagnet to enter is arranged on the side wall of the slider, and when the upper template and the lower template are in the mold closing state, the push rod of the push-pull electromagnet is located in the positioning hole and the compression spring is compressed.

[0006] As a preferred technical solution of the utility model, guide grooves are arranged on both side walls of the slide groove, and a slide rod which is slidably matched with the guide groove is arranged on the slide groove.

[0007] As a preferred technical solution of the utility model, a magnetic attraction mechanism is arranged between the upper template and the lower template, and the magnetic attraction mechanism includes a pair of magnetic blocks that attract each other.

[0008] As a preferred technical solution of the utility model, the metal insert is placed in the positioning groove and one corner thereof corresponds to the air avoidance groove.

[0009] As a preferred technical solution of the utility model, the upper end surface of the die is provided with a gate, and the upper mold plate is provided with a guide groove that can guide the filler in the gate to the gate, and the gate is connected to the die.

[0010] As a preferred technical solution of the utility model, the die is provided with a chip discharge hole at the position corresponding to the cutter for discharging the cut blank.

[0011] As a preferred technical solution of the utility model, the cutter is arranged along the vertical direction and penetrates the punch.

[0012] To sum up, the beneficial effects of the utility model are as follows: after the injection molding of the assembly parts is completed, it is usually necessary to eject the product and subsequently handle the waste. However, the waste is embedded in the positioning groove, which is extremely inconvenient to do manually. The present application sets an air avoidance groove at the positioning groove, and uses a seesaw to make the waste escape from the positioning groove. The specific operation method is: in the initial state (the waste is embedded in the positioning groove), the push rod of the push-pull electromagnet and the positioning hole of the slider cooperate to achieve locking. When handling the waste, the control switch is pressed, the push rod of the push-pull electromagnet retracts, and the compression spring restores the deformation to make the slider pop out, and the seesaw lifts one end of the waste, which is convenient for manually removing the waste, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a structural schematic diagram of the lower template of the utility model;

[0015] Figure 3 yes Figure 2 Enlarged view of part A;

[0016] Figure 4 It is a cross-sectional view of the chute part of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the upper template of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the assembly parts;

[0019] Figure 7 It is a schematic diagram of the structure of the metal insert.

[0020] : Reference numerals: 1. upper template; 2. lower template; 3. punch; 4. die; 5. positioning groove; 6. cutter; 7. air avoidance groove; 8. ejector mechanism; 9. slider; 10. seesaw; 11. push-pull electromagnet; 12. control switch; 13. slide groove; 14. compression spring; 15. positioning hole; 16. push rod; 17. guide groove; 18. slide rod; 19. magnetic block; 20. inlet gate; 21. inlet channel; 22. guide groove; 23. chip removal hole; 24. metal insert; 25. pin; 26. outer frame; 27. connecting strip; 28. plastic shell. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 7The injection mold assembly with a waste ejection structure shown in the figure comprises an upper template 1 and a lower template 2, the upper template 1 is provided with a punch 3, the lower template 2 is provided with a die 4 adapted to the punch 3 at a position corresponding to the punch 3, and a molding cavity for injection molding assembly parts is formed between the punch 3 and the die 4, and a positioning groove 5 for positioning a metal insert 24 is provided on the die 4, and a cutter 6 for cutting off the connecting strip 27 of the metal insert 24 is provided on the upper template 1, and the cutter 6 is arranged in the vertical direction and penetrates the punch 3, and an air avoidance groove 7 is provided on the die 4 corresponding to the positioning groove 5, and the metal insert 24 is placed in the positioning groove 5 and one corner of it corresponds to the air avoidance groove 7, and an ejection mechanism 8 for separating the metal insert 24 from the positioning groove 5 is provided on the lower template 2, and the air avoidance groove 7 is opposite to the metal insert 24. The ejection mechanism 8 includes a slider 9, a seesaw 10, a push-pull electromagnet 11 and a control switch 12. The control switch 12 is electrically connected to the electromagnet. A slide groove 13 for the slider 9 to move is provided on the lower template 2. The seesaw 10 is installed on the inner side of the slider 9 and the end of the seesaw 10 extends into the air avoidance groove 7. A compression spring 14 is provided between the bottom wall of the slide groove 13 and the bottom of the slider 9. The push-pull electromagnet 11 is arranged on one side of the slider 9 and installed on the lower template 2. A positioning hole 15 for the push rod 16 of the push-pull electromagnet 11 to enter is provided on the side wall of the slider 9. When the upper template 1 and the lower template 2 are in the mold closing state, the push rod 16 of the push-pull electromagnet 11 is located in the positioning hole 15 and the compression spring 14 is compressed. In this embodiment, the ejection mechanism 8 is provided at the diagonal of a positioning groove 5.

[0024] After the injection molding of the assembly parts is completed, it is usually necessary to eject the product and subsequently handle the waste. However, the waste is embedded in the positioning groove 5, which is extremely inconvenient to do manually. The present application sets an air avoidance groove 7 at the positioning groove 5, and uses the rocker 10 to make the waste escape from the positioning groove 5. The specific operation method is: in the initial state (the waste is embedded in the positioning groove 5), the push rod 16 of the push-pull electromagnet 11 and the positioning hole 15 of the slider 9 cooperate to achieve locking. When handling the waste, the control switch 12 is pressed, the push rod 16 of the push-pull electromagnet 11 retracts, and the compression spring 14 restores the deformation to make the slider 9 pop out. The rocker 10 lifts one end of the waste, which is convenient for manually removing the waste. The operation is convenient. When installing the metal insert 24, the slider 9 is pressed downward, and the control button is started to make the push rod 16 of the push-pull electromagnet 11 enter the positioning hole 15.

[0025] The two side walls of the slide groove 13 are provided with guide grooves 17 , and the slide groove 13 is provided with a slide rod 18 that slides with the guide groove 17 to prevent the slider 9 from deviating.

[0026] A magnetic attraction mechanism is provided between the upper template 1 and the lower template 2. The magnetic attraction mechanism includes a pair of mutually attracted magnetic blocks 19. The magnetic blocks 19 are respectively installed on the upper template 1 and the lower template 2.

[0027] A gate 20 is provided on the upper end face of the die 4, and a guide groove 22 is provided on the upper mold plate 1 for guiding the filler in the gate 21 to the gate 20. The gate 21 is connected to the die 4, and the die 4 is provided with a chip discharge hole 23 at the corresponding cutter 6 for discharging the broken blank.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An injection mold assembly with a waste ejection structure, comprising an upper mold plate (1) and a lower mold plate (2), wherein the upper mold plate (1) is provided with a punch (3), and the lower mold plate (2) is provided with a die (4) adapted to the punch (3) at a position corresponding to the punch (3), wherein a molding cavity for injection molding assembly parts is formed between the punch (3) and the die (4), and a positioning groove (5) for positioning a metal insert (24) is provided on the die (4), and a cutter (6) for cutting off a connecting strip (27) of the metal insert (24) is provided on the upper mold plate (1), wherein: The concave mold (4) is provided with a clearance groove (7) at a position corresponding to the positioning groove (5); the lower mold plate (2) is provided with an ejection mechanism (8) for separating the metal insert (24) from the positioning groove (5); the clearance groove (7) corresponds to the metal insert (24); the ejection mechanism (8) comprises a slider (9), a seesaw (10), a push-pull electromagnet (11) and a control switch (12); the control switch (12) is electrically connected to the push-pull electromagnet (11); the lower mold plate (2) is provided with a slide groove (13) for the slider (9) to move; the seesaw (10) is provided with a push-pull electromagnet (11); The push-pull electromagnet (11) is arranged on the inner side of the slider (9) and the end of the seesaw (10) extends into the air avoidance groove (7). A compression spring (14) is arranged between the bottom wall of the slide groove (13) and the bottom of the slider (9). The push-pull electromagnet (11) is arranged on one side of the slider (9) and installed on the lower template (2). The side wall of the slider (9) is provided with a positioning hole (15) for a push rod (16) of the push-pull electromagnet (11) to enter. When the upper template (1) and the lower template (2) are in a mold-closing state, the push rod (16) of the push-pull electromagnet (11) is located in the positioning hole (15) and the compression spring (14) is compressed.

2. The injection mold assembly with a waste ejection structure according to claim 1, characterized in that: The two side walls of the slide groove (13) are provided with guide grooves (17), and the slide groove (13) is provided with a slide rod (18) which is slidably matched with the guide groove (17).

3. The injection mold assembly with a waste ejection structure according to claim 1, characterized in that: A magnetic attraction mechanism is provided between the upper template (1) and the lower template (2), and the magnetic attraction mechanism comprises a pair of magnetic blocks (19) that attract each other.

4. The injection mold assembly with a waste ejection structure according to claim 1, characterized in that: The metal insert (24) is placed in the positioning groove (5) with one corner corresponding to the air avoidance groove (7).

5. The injection mold assembly with a waste ejection structure according to claim 1, characterized in that: The upper end surface of the concave mold (4) is provided with a pouring gate (20), and the upper mold plate (1) is provided with a guide groove (22) capable of guiding the filler in the pouring channel (21) to the pouring gate (20), and the pouring channel (21) is connected to the concave mold (4).

6. The injection mold assembly with a waste ejection structure according to claim 1, characterized in that: The die (4) is provided with a chip discharge hole (23) at a position corresponding to the cutter (6) for discharging the cut blanks.

7. The injection mold assembly with a waste ejection structure according to claim 1, characterized in that: The cutter (6) is arranged in a vertical direction and penetrates the male mold (3).

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