Side core-pulling anti-falling-damage injection mold

Abstract

The utility model relates to a side core-pulling anti-falling damage injection mold, which belongs to the technical field of injection molds, and comprises an upper mold plate, a lower mold plate and a mold core assembly, and the bottom surface of the upper mold plate is provided with an upper mold groove; the top surface of the lower mold plate is provided with a lower mold groove, and the top surface of one side, corresponding to the lower mold groove, of the lower mold plate is provided with a sliding groove communicated with the lower mold groove; the mold core assembly comprises a sliding stop block and a sliding pulling core. The sliding stop block slides in the sliding groove, and a plurality of through holes are formed in the sliding stop block at intervals. The sliding pulling core is located on the side, away from the lower die groove, of the sliding stop block and slides in the sliding groove, and a plurality of core columns are fixed to the side, close to the sliding stop block, of the sliding pulling core at intervals and penetrate through the through holes in a sliding mode to stretch into the lower die groove. A traditional mold core assembly structure is changed, an injection molding cavity is formed by the upper mold groove, the lower mold groove, the sliding stop block and the multiple core columns, after an injection molding finished product is formed, the sliding stop block can be tried to abut against the injection molding finished product, then the multiple core columns are pulled away, and the situation that the injection molding finished product adheres to the injection mold cavity to generate stripping marks is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a side core-pulling anti-fall-off injection mold. Background Art

[0002] Injection molds are tools used to produce plastic products and give them a complete structure and precise dimensions. Injection molding is a process used for mass production of complex-shaped parts. Specifically, the heated, molten plastic is injected into the mold cavity under high pressure using an injection molding machine. After cooling and solidification, the resulting molded product is formed.

[0003] At present, the traditional injection mold is mainly composed of an upper template, a lower template and a push rod, wherein the bottom surface of the upper template is provided with an upper mold groove; the lower template is located below the upper template and its top surface is provided with a lower mold groove, and the bottom of the lower mold groove is provided with a top hole; the push rod slides in the top hole; in actual application, the upper template is pressed against the lower template and the push rod is placed in the top hole to form an injection cavity between the push rod, the upper mold groove and the lower mold groove; after the finished product is formed in the injection cavity, the push rod can be pushed upward to eject the injection molded product. Although the above structure can achieve rapid demolding of the injection molded product, when the injection molded product is demolded, the injection molded product is easily adhered to the groove wall of the lower mold groove, resulting in the injection molded product being easily torn during demolding, affecting the demolding efficiency and demolding effect of the injection molded product, and causing the defective rate of the injection molded product to increase.

[0004] Therefore, how to design an injection mold with a simple structure, low preparation cost and the ability to prevent the injection molded product from being damaged is an urgent problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The utility model provides a side core-pulling anti-stripping injection mold, which solves the technical problem that existing injection molded products are easily damaged during demoulding.

[0006] The utility model solves the above technical problems with the following technical solutions: a side core-pulling anti-slip injection mold, comprising: an upper mold plate, a lower mold plate and a mold core assembly,

[0007] The bottom surface of the upper template is provided with an upper mold groove; the lower template is located below the upper template and has a lower mold groove arranged opposite to the upper mold groove on its top surface, and the top surface of the lower template corresponding to the side of the lower mold groove is provided with a slide groove communicated with the lower mold groove, and the slide groove is arranged from away from the lower mold groove to close to the lower mold groove and passes through the side of the lower template, and the bottom of the slide groove is provided with a plurality of fixing screw holes; the mold core assembly includes a sliding block, a sliding core and a plurality of bolts A, the sliding block slides in the slide groove and is provided with a plurality of through holes arranged in the same direction as the slide groove at intervals on it; the sliding core is located on the side of the sliding block away from the lower mold groove and slides in the slide groove, A plurality of core columns are fixed at intervals on one side of the sliding core close to the sliding block, and the plurality of core columns slide through the plurality of through holes and extend into the lower mold groove respectively. A plurality of fixing holes are provided at intervals on the top surface of the sliding core, and the plurality of fixing holes can be arranged opposite to the plurality of fixing screw holes respectively; a plurality of bolts A pass through the plurality of fixing holes respectively and are screwed into the corresponding fixing screw holes; the upper template can be pressed on the lower template, and an injection molding cavity is formed between the upper mold groove, the lower mold groove, the sliding block and the plurality of core columns, so that when the plurality of core columns are pulled out to facilitate the removal of the injection molded product, the sliding block is used to contact the injection molded product to prevent the injection molded product from being damaged.

[0008] The beneficial effects of the present invention are: changing the structure of the traditional mold core assembly, utilizing the upper mold groove, the lower mold groove, the sliding block and a plurality of core columns to form an injection cavity; after the injection molded product is formed, the sliding block can be tried to contact the injection molded product first, and then the plurality of core columns can be pulled out, thereby avoiding the injection molded product and the injection mold cavity from adhering to each other and causing detachment scars when the core column of the traditional injection mold is directly pulled out.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the axes of the multiple bolts A, the axes of the multiple fixing screw holes, and the axes of the multiple fixing holes are all arranged at an acute angle to the height direction of the lower template.

[0011] Furthermore, the mold core assembly also includes a pressure block, the longitudinal section of the sliding core is a right-angled trapezoidal structure and its small-area end is arranged upward, and the other side of the sliding core away from the sliding block is an inclined surface; the longitudinal section of the pressure block is a right-angled trapezoidal structure and its small-area end is arranged downward, and the inclined surface of the pressure block presses on the inclined surface of the sliding core.

[0012] A further beneficial effect of the above method is that the right-angled trapezoidal pressure block is used to press the right-angled trapezoidal sliding core. After the bolt A locks the sliding core, the pressure block can be used to press the sliding core again to improve the stability of the sliding core.

[0013] Furthermore, a slot is provided at the bottom of the slide groove; an insert block is fixed to the small-area end of the pressing block, and the insert block can be detachably inserted into the slot.

[0014] A further beneficial effect of the above method is that the stability of the pressing block can be improved by first fixing the insert block on the small-area end of the bottom of the pressing block and then inserting the insert block into the slot.

[0015] Furthermore, the mold core assembly further comprises a limiting block, and the inclined surface of the sliding core is provided with a limiting groove along its inclined direction; the limiting block is fixed on the inclined surface of the pressing block and can be inserted into the limiting groove.

[0016] A further beneficial effect of the above method is that the stability of the pressing block pressing the sliding core can be improved by sliding the limiting block fixed on the inclined surface of the pressing block into the limiting groove on the inclined surface of the sliding core.

[0017] Furthermore, the mold core assembly also includes a push-off spring, a groove A is provided on the side of the sliding core close to the sliding block, and a groove B is provided on the side of the sliding block close to the sliding core; one end of the push-off spring is fixed to the bottom of the groove A and the other end is fixed to the bottom of the groove B.

[0018] A further beneficial effect of the above method is that by fixing the two ends of the push-off spring to the bottom of the groove B of the sliding block and the bottom of the groove A of the sliding core respectively, the sliding block and the sliding core can be pushed away after the bolt A is unscrewed, thereby realizing the automation of the demoulding of the injection molded product.

[0019] Furthermore, the core mold assembly also includes a plurality of bolts B, and the sliding block is provided with a plurality of countersunk holes that are in the same direction as the through holes and are staggered; the sliding block is provided with a plurality of locking screw holes that are in the same direction as and opposite to the plurality of countersunk holes; the plurality of bolts B respectively pass through the plurality of countersunk holes and are screwed into the relative locking screw holes.

[0020] A further beneficial effect of the above method is that the multiple bolts B are respectively passed through the multiple countersunk holes on the sliding core and screwed into the corresponding locking screw holes of the sliding block, thereby utilizing the tightness of the connection between the sliding core and the sliding block.

[0021] Furthermore, it also includes a limit assembly, which includes a limit spring and a limit block. The bottom of the slide groove is provided with a fixed groove; the bottom end of the sliding core is provided with a blocking groove; the bottom end of the limit spring is fixed to the bottom of the fixed groove; the bottom end of the limit block is fixed to the top end of the limit spring and its top end extends into the fixed groove and can extend into the blocking groove.

[0022] The above method has the further beneficial effect of elastically connecting the limit block to the limit groove of the lower template. After the sliding core slides to a certain position, the limit block can be extended out of the limit groove and into the blocking groove to prevent the sliding core from continuing to slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the assembly structure of the lower template and the core component in a side core-pulling and anti-slip injection mold of the utility model;

[0024] Figure 2 This is a schematic diagram of the split structure of the lower template and the core assembly in a side core-pulling and anti-slipping injection mold of the utility model;

[0025] Figure 3 This is a schematic cross-sectional view of the lower template and core assembly along the core column direction of a side core-pulling and anti-slipping injection mold of the utility model;

[0026] Figure 4 This is a schematic cross-sectional view of the lower template and core assembly in a side core-pulling anti-slip injection mold of the utility model along the direction of pushing away the spring axis;

[0027] Figure 5 The utility model is a schematic cross-sectional structure diagram of the lower template and the core assembly along the axis direction of the bolt B in a side core-pulling anti-slip injection mold.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Lower template, 11. Lower mold groove, 12. Slide groove, 121. Fixing screw hole, 122. Slot, 123. Fixing groove, 2. Core assembly, 21. Slide block, 211. Through hole, 22. Slide core, 23. Bolt A, 24. Core column, 25. Pressure block, 251. Insert block, 26. Push-off spring, 27. Bolt B, 3. Limit assembly, 31. Limit spring, 32. Limit block. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figure 1 and Figure 2 As shown, a side core-pulling anti-slip injection mold includes: an upper mold plate, a lower mold plate 1 and a core assembly 2.

[0032] The bottom surface of the upper template is provided with an upper mold groove; the lower template 1 is located below the upper template and its top surface is provided with a lower mold groove 11 arranged opposite to the upper mold groove, and the top surface of the lower template 1 corresponding to the lower mold groove 11 is provided with a slide groove 12 connected to the lower mold groove 11, the slide groove 12 is arranged from away from the lower mold groove 11 to close to the lower mold groove 11 and passes through the side of the lower template 1, and the bottom of the slide groove 12 is provided with a plurality of fixing screw holes 121; the core assembly 2 includes a sliding block 21, a sliding core 22 and a plurality of bolts A23, the sliding block 21 slides in the slide groove 12 and is provided with a plurality of through holes 211 arranged in the same direction as the slide groove 12 at intervals; the sliding core 22 is located on the side of the sliding block 21 away from the lower mold groove 11 and slides in the sliding groove 12, and a plurality of core columns 24 are fixed at intervals on the side of the sliding core 22 close to the sliding block 21, and the plurality of core columns 24 respectively slide through the plurality of through holes 211 and extend into the lower mold groove 11, and a plurality of fixing holes are provided at intervals on the top surface of the sliding core 22, and the plurality of fixing holes can be respectively arranged relative to the plurality of fixing screw holes 121; a plurality of bolts A23 respectively pass through the plurality of fixing holes and are screwed into the corresponding fixing screw holes 121; the upper mold plate can be pressed on the lower mold plate 1 and form an injection cavity between the upper mold groove, the lower mold groove 11, the sliding block 21 and the plurality of core columns 24.

[0033] like Figure 2 As shown, in some specific embodiments, the axes of the multiple bolts A23, the axes of the multiple fixing screw holes 121 and the axes of the multiple fixing holes are all arranged at an acute angle to the height direction of the lower template 1.

[0034] like Figure 1 and Figure 2 As shown, in some specific embodiments, the core assembly 2 may further include a pressing block 25, the longitudinal section of the sliding core 22 is a right-angled trapezoidal structure and its small-area end is arranged upward, and the other side of the sliding core 22 away from the sliding block 21 is an inclined surface; the longitudinal section of the pressing block 25 is a right-angled trapezoidal structure and its small-area end is arranged downward, and the inclined surface of the pressing block 25 presses on the inclined surface of the sliding core 22.

[0035] like Figure 4 As shown, a slot 122 is provided at the bottom of the slide 12 ; an inserting block 251 is fixed to the small end of the pressing block 25 , and the inserting block 251 can be detachably inserted into the slot 122 .

[0036] Specifically, the core assembly 2 further includes a limiting block, and the inclined surface of the sliding core 22 is provided with a limiting groove along its inclined direction; the limiting block is fixed on the inclined surface of the pressing block 25 and can be inserted into the limiting groove.

[0037] like Figure 2 and Figure 4As shown, in some specific embodiments, the core assembly 2 may further include a push-off spring 26, a groove A is provided on the side of the sliding core 22 close to the sliding block 21, and a groove B is provided on the side of the sliding block 21 close to the sliding core 22; one end of the push-off spring 26 is fixed to the bottom of the groove A and the other end is fixed to the bottom of the groove B.

[0038] like Figure 2 and Figure 5 As shown, in some specific embodiments, the core assembly 2 may further include a plurality of bolts B27, and the sliding block 21 is provided with a plurality of countersunk holes that are arranged in the same direction as the through hole 211 and are staggered; the sliding block 21 is provided with a plurality of locking screw holes that are respectively in the same direction as and opposite to the plurality of countersunk holes; and the plurality of bolts B27 respectively pass through the plurality of countersunk holes and are screwed into the relative locking screw holes.

[0039] like Figure 3 As shown, in some specific embodiments, a limit assembly 3 may also be included, and the limit assembly 3 may include a limit spring 31 and a limit block 32. The bottom of the slide groove 12 is provided with a fixed groove 123; the bottom end of the sliding core 22 is provided with a blocking groove; the bottom end of the limit spring 31 is fixed to the bottom of the fixed groove 123; the bottom end of the limit block 32 is fixed to the top end of the limit spring 31 and its top end extends into the fixed groove 123 and can extend into the blocking groove.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A side core-pulling anti-slip injection mold, characterized in that: include: An upper template, wherein the bottom surface of the upper template is provided with an upper mold groove; A lower template (1), the lower template (1) is located below the upper template and has a lower mold groove (11) arranged opposite to the upper mold groove on its top surface, the top surface of the lower template (1) corresponding to the lower mold groove (11) is provided with a slide groove (12) communicating with the lower mold groove (11), the slide groove (12) is arranged from away from the lower mold groove (11) to close to the lower mold groove (11) and passes through the side of the lower template (1), and the bottom of the slide groove (12) is provided with a plurality of fixing screw holes (121); A mold core assembly (2), the mold core assembly (2) includes a sliding block (21), a sliding core (22) and a plurality of bolts A (23), the sliding block (21) slides in the slide groove (12) and is provided with a plurality of through holes (211) arranged in the same direction as the slide groove (12); the sliding core (22) is located on the side of the sliding block (21) away from the lower mold groove (11) and slides in the slide groove (12), the sliding core (22) is fixed with a plurality of core columns (24) at intervals on the side close to the sliding block (21), and the plurality of core columns ( 24) slide through the multiple through holes (211) and extend into the lower mold groove (11), the top surface of the sliding core (22) is provided with multiple fixing holes at intervals, and the multiple fixing holes can be arranged relative to the multiple fixing screw holes (121); the multiple bolts A (23) pass through the multiple fixing holes and are screwed into the corresponding fixing screw holes (121); the upper mold plate can be pressed on the lower mold plate (1) and form an injection cavity between the upper mold groove, the lower mold groove (11), the sliding block (21) and the multiple core columns (24).

2. A side core-pulling anti-slip injection mold according to claim 1, characterized in that: The axes of the plurality of bolts A (23), the axes of the plurality of fixing screw holes (121), and the axes of the plurality of fixing holes are all arranged at an acute angle to the height direction of the lower template (1).

3. A side core-pulling anti-slip injection mold according to claim 1, characterized in that: The mold core assembly (2) also includes a pressing block (25), the longitudinal section of the sliding core (22) is a right-angled trapezoidal structure and its small-area end is arranged upward, and the other side of the sliding core (22) away from the sliding block (21) is an inclined surface; the longitudinal section of the pressing block (25) is a right-angled trapezoidal structure and its small-area end is arranged downward, and the inclined surface of the pressing block (25) presses against the inclined surface of the sliding core (22).

4. A side core-pulling anti-slip injection mold according to claim 3, characterized in that: The bottom of the chute (12) is provided with a slot (122); the small-area end of the pressing block (25) is fixed with an inserting block (251), and the inserting block (251) is detachable and inserted into the slot (122).

5. The side core-pulling anti-slip injection mold according to claim 3, characterized in that: The core assembly (2) further comprises a limiting block, and the inclined surface of the sliding core (22) is provided with a limiting groove along its inclined direction; the limiting block is fixed on the inclined surface of the pressing block (25) and can be inserted into the limiting groove.

6. The side core-pulling anti-slip injection mold according to claim 1, characterized in that: The mold core assembly (2) further includes a push-off spring (26); a groove A is provided on the side of the sliding core (22) close to the sliding block (21); and a groove B is provided on the side of the sliding block (21) close to the sliding core (22); one end of the push-off spring (26) is fixed to the bottom of the groove A and the other end is fixed to the bottom of the groove B.

7. The side core-pulling anti-slip injection mold according to claim 1, characterized in that: The core mold assembly (2) further comprises a plurality of bolts B (27); the sliding block (21) is provided with a plurality of countersunk holes which are arranged in the same direction as the through hole (211) and are staggered; the sliding block (21) is provided with a plurality of locking screw holes which are respectively arranged in the same direction as and opposite to the plurality of countersunk holes; the plurality of bolts B (27) respectively pass through the plurality of countersunk holes and are screwed into the corresponding locking screw holes.

8. The side core-pulling anti-slip injection mold according to claim 1, characterized in that: The invention also includes a limiting assembly (3), wherein the limiting assembly (3) includes a limiting spring (31) and a limiting block (32); the bottom of the sliding groove (12) is provided with a fixing groove (123); the bottom end of the sliding core (22) is provided with a blocking groove; the bottom end of the limiting spring (31) is fixed to the bottom of the fixing groove (123); the bottom end of the limiting block (32) is fixed to the top end of the limiting spring (31), and the top end thereof extends into the fixing groove (123) and can extend into the blocking groove.

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