Injection mold and buckle molding method

Abstract

The present invention provides an injection mold and a buckle molding method, including a front template, a rear template and a push plate, wherein the front template covers the top of the rear template, and the push plate is arranged below the rear template, and the front template and the rear template are pushed upward by the push plate, and the front template and the rear template are characterized in that a front mold core is embedded in the front template, and a rear mold core is embedded in the rear template, and the rear mold core is arranged to be formed by multiple sliders. The present invention sets the mold core as a structure formed by multiple sliders, which is suitable for longer and larger injection molded parts, and is convenient for adjusting the number and structure of sliders according to the size of the required injection molded parts. The newly added spring block mechanism and the spring work closely together to achieve fast lowering and quick replacement of the spring block, and fast ejection, improve production efficiency, and solve the problem of mold sticking in the prior art. The setting of the limiting structure can accurately control the movement stroke and position of the slider in the rear template and the rear template, realize accurate control of the structure and size of the injection molded parts, and reduce the defective rate.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and particularly to an injection mold and a snap molding method. Background Art

[0002] Injection molds are tools for producing plastic products; they are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and molten material into the mold cavity under high pressure, and then cooling and solidifying to obtain a molded product.

[0003] When the injection molded part 1 is longer, the drop is relatively large, and there are internal snaps, (such as Figure 1 ), using the commonly used one-piece mold structure in the prior art will lead to the following disadvantages: large sliders are difficult to process, take a long time to process, are costly (high risk of spare parts), and cannot be quickly replaced; large sliders have low control accuracy, are difficult to control, and have insufficient accuracy; the inward buckle 2 is complicated to form, and it is not easy to form injection molded parts, which reduces production efficiency. As a result, the molded injection molded parts have defects, which is not conducive to assembly. Summary of the invention

[0004] In view of this, the present invention aims to propose an injection mold to solve the problems in the prior art that the injection mold cannot be quickly lowered and replaced quickly, has low accuracy, is complex in the snap molding, and is not conducive to the molding of large plastic parts.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An injection mold comprises a front template, a rear template and a push plate, wherein the front template covers the top of the rear template, and the push plate is arranged below the rear template, and the front template and the rear template are pushed upward by the push plate. The invention is characterized in that a front mold core is embedded in the front template, and a rear mold core is embedded in the rear template, and the rear mold core is arranged to be formed by multiple sliders.

[0007] Furthermore, the rear mold core includes a pressure strip mechanism, a spring block mechanism, an insert mechanism and an edge pressing mechanism. The insert mechanism is arranged in the middle part of the rear mold core, and the spring block mechanism is arranged on both sides of the insert mechanism to control the formation of inward buckles on the injection molded part.

[0008] The mold formed by inlaying multiple sliders has strong scalability and can be applied to larger and longer plastic products. The number of sliders can be adjusted according to the actual size of the sliders. It can be quickly replaced and installed, which is convenient for the molding of inward buckles. It can greatly shorten the production cycle and improve precision.

[0009] Furthermore, the pressure strip mechanism is arranged on the outside of the spring block mechanism away from the insert mechanism, and the spring block mechanism is driven by the pressure strip mechanism to move. The edge pressing mechanism is arranged on the outside and both ends of the spring block mechanism, and the edge pressing mechanism includes a first edge pressing and a second edge pressing.

[0010] The structural arrangement of the spring bar mechanism and the pressure bar mechanism makes the series of movement processes for forming the inward buckle compact, accurately controls the movement stroke and position of the spring block, ensures the smooth forming of the inward buckle 2, and reduces the defective rate.

[0011] Further, the inlay mechanism is a plurality of inlay inlay molding, the inlay mechanism includes a first mold inlay disposed in the middle part and two second mold inlays disposed at both ends.

[0012] The structure of molding using multiple molded inserts can adjust the size and number of molded inserts according to needs, so it is suitable for injection molded products of different lengths and has a wide range of uses.

[0013] Furthermore, the spring block mechanism is configured to be formed by inlaying multiple sliders, and the spring block mechanism includes a spring block, a pressure block and a first fixing member for fixing the pressure block. The pressure block is arranged on the upper part of the pressure strip mechanism, one end of the pressure block is fixed to the pressure strip mechanism by the first fixing member, and the other end of the pressure block is buckled on the spring block.

[0014] The spring block mechanism is set as a structure in which multiple sliders are inlaid and formed. It is not only suitable for larger, longer injection molded parts or those with inward buckles, but also can accurately control the movement stroke and position of the spring block, realize fast lowering and changing, rapid molding, and also avoid mold sticking.

[0015] Furthermore, the spring block is configured as a triangular structure, a notch is provided on one side of the spring block facing the pressure block, the other side of the spring block is configured as a slope structure, an inwardly recessed guide groove is provided inside one side of the slope of the spring block, and the guide groove can slide along the slide rail.

[0016] The elastic block is set to a triangular structure so as to match the inclined surface on the side of the shovel base, which facilitates the sliding of the guide groove and provides a convenient and fast forming track for the forming of the inward snap.

[0017] Furthermore, the pressure strip mechanism is configured as a pressure strip for supporting the spring block mechanism and driving the spring block mechanism to move. A positioning hole is provided on the pressure strip, and a first fixing member passes through the positioning holes on the pressure block and the pressure strip to fix the pressure block on the pressure strip.

[0018] When the push plate drives the rear template to move upward, the pressure bar pushes the pressure block to move upward, and then the slider drives the spring block to move. The process is compact, which is convenient for fast lowering and fast changing, and accurately controls the movement stroke and position of the spring block.

[0019] Furthermore, a shovel base is fixedly arranged on the push plate, the shovel base protrudes and extends upward, a slope is arranged on the side of the shovel base close to the top, a guide block is arranged on the slope, the guide block is vertically installed on the slope, and the guide block extends outward to form a slide rail for the guide groove to slide.

[0020] The inclined surface on the top of the shovel base cooperates with the inclined surface structure on the spring block, so that when the guide groove slides along the guide block, it not only moves upward along the Z axis, but also moves along the negative direction of the X axis, thereby forming the inward buckle.

[0021] Furthermore, a limiting structure is provided on one side of the rear template and the push plate, the limiting structure includes a first limiting block and a second limiting block, and the lower parts of the first limiting block and the second limiting block are fixed to the side of the push plate by a fourth fixing member, and a groove is provided on the side of the rear template at a position corresponding to the limiting structure.

[0022] When the push plate pushes the rear template to move upward, the first protrusion on the first limit block hooks into the groove on the side of the rear template, thereby accurately controlling the movement stroke and position of the rear template, playing a good limiting role, and preventing the slider on the rear template from exceeding the predetermined movement range.

[0023] Compared with the prior art, the injection molds described in the present invention have the following advantages:

[0024] The injection mold of the present invention sets the mold core as a structure formed by inlaying multiple sliders, which is not only suitable for longer and larger injection molded parts, but also convenient for adjusting the number and structure of sliders according to the size of the required injection molded parts, and has strong applicability. The newly added spring block mechanism and the spring work closely together to achieve fast lowering, fast replacement and fast ejection of the spring block, which not only improves production efficiency, but also solves the problem of mold sticking in the prior art. The limit structure is set on the side of the rear template and the push plate, which can accurately control the movement stroke and position of the rear template and the slider in the rear template, realize accurate control of the structure and size of the injection molded parts, and reduce the defective rate.

[0025] The present invention also provides an injection mold buckle molding method, using the injection mold described above, in the injection molding state, the mold is in a mold closing state, the shovel base is fixed on the push plate, and the shovel base and the spring block are in a holding state;

[0026] When the injection molding is completed, the mold is opened, and the elastic part on the push plate has an elastic force along the positive direction of the Z axis, which prompts the rear template to move upward along the positive direction of the Z axis. The pressure strip on the rear template pushes the pressure block upward to move, and the pressure block drives the guide groove on the spring block to slide along the guide block, so that the spring block moves upward along the positive direction of the Z axis while being accompanied by movement along the negative direction of the X axis, thereby forming an inward buckle.

[0027] The method of snap molding of the injection mold is the same as the advantages of the above-mentioned injection mold over the prior art, and will not be described here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 Schematic diagram of injection molded parts and inward snap structures described in an embodiment of the present invention;

[0030] Figure 2 It is an axial view of the injection mold in the mold-closed state of the embodiment of the present invention;

[0031] Figure 3 It is an axial view of the injection mold in the mold opening state of the embodiment of the present invention;

[0032] Figure 4 This is an axial view of the front template according to an embodiment of the present invention;

[0033] Figure 5 This is an axial view of the rear template according to an embodiment of the present invention;

[0034] Figure 6 This is a view of the rear mold core shaft according to an embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of the rear mold kernel explosion structure described in an embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the structure of the elastic strip mechanism and the pressing mechanism described in the embodiment of the present invention;

[0037] Fig. 9 Schematic diagram of explosion structure of the elastic strip mechanism and the pressing mechanism described in the embodiment of the present invention;

[0038] Fig.10 Front view of the blasting rod mechanism and the blasting rod mechanism described in an embodiment of the present invention;

[0039] Fig.11 A schematic diagram of another perspective structure of the rear template described in an embodiment of the present invention;

[0040] Fig.12 It is a schematic diagram of the fixed structure of the inlay mechanism in the rear template described in an embodiment of the present invention;

[0041] Fig.13 A schematic diagram of the structure of the inlay mechanism described in an embodiment of the present invention;

[0042] Fig.14A schematic diagram of the explosion structure of the inlay mechanism described in an embodiment of the present invention;

[0043] Fig.15a It is a front view of the injection mold in the mold-closed state as described in the embodiment of the present invention;

[0044] Fig.15b It is a front view of the injection mold in the mold opening state as described in the embodiment of the present invention;

[0045] Fig.15c It is a front view of the injection mold after the mold is moved upward when the injection mold is in the mold opening state according to an embodiment of the present invention;

[0046] Fig.16 It is a front view of the push plate structure described in an embodiment of the present invention;

[0047] Fig.17 It is a view of the push plate structure as described in an embodiment of the present invention;

[0048] Fig.18 It is a shaft view of the push plate structure containing elastic members as described in the embodiment of the present invention;

[0049] Fig.19 It is a burst diagram of the push plate structure containing elastic members as described in the embodiment of the present invention;

[0050] Fig. 20 It is an explosion diagram from another perspective of the push plate structure containing elastic members as described in the embodiment of the present invention;

[0051] Fig.21 It is a schematic diagram of the structure of the rear template and push plate as described in the embodiment of the present invention;

[0052] Fig. 22 It is an enlarged view of the second limit block on the rear template as described in the embodiment of the present invention;

[0053] Fig.23 It is a schematic diagram of the structure of the second limit block according to an embodiment of the present invention;

[0054] Fig.24 A schematic diagram of the coordination structure of the shovel base and the elastic block mechanism described in an embodiment of the present invention;

[0055] Fig.25 for Fig.24 A partial enlarged view of the A part;

[0056] Fig.26 A cross-sectional view of the shovel base and the elastic block mechanism as described in the embodiment of the present invention;

[0057] Fig. 27 A schematic diagram of the structure of the elastic block mechanism in the mold opening state and the shovel base is used as an embodiment of the present invention;

[0058] Fig.28for Fig. 27 A partial enlarged view of the B area;

[0059] Fig.29 A cross-sectional view of the shovel base and the elastic block mechanism are in the open mold state as described in the embodiment of the present invention.

[0060] Description of reference numerals:

[0061] 1-injection molded part, 2-inward buckle, 3-front template, 4-rear template, 5-push plate, 7-rear mold core, 8-front mold core, 9-pressing strip mechanism, 10-first pressing edge, 11-first mold core insert, 12-spring block mechanism, 14-second pressing edge, 15-second mold core insert, 16-shovel base, 17-spring block, 18-pressing block, 19-first fixing member, 20-pressing strip, 21-positioning boss, 22-second fixing member, 23-third fixing member, 24-elastic member; 25-elastic base; 26-sixth fixing member, 27-mounting hole, 28-first limiting block; 29-second limiting block, 30-fourth fixing member, 31-guide block, 32-fifth fixing member, 34-guide groove, 161-inclined surface, 291-first protrusion, 292-second protrusion, 293-connecting plate DETAILED DESCRIPTION

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0064] This embodiment provides an injection mold, such as Figures 2 to 5As shown, it includes a front template 3, a rear template 4 and a push plate 5. The front template 3 covers the rear template 4 to achieve mold closing. The push plate 5 is set below the rear template 4. The push plate 5 pushes the front template 3 and the rear template 4 to move upward, thereby realizing mold opening. A front mold core 8 is embedded in the front template 3, and a rear mold core 7 is embedded in the rear template 4. The rear mold core 7 is set to be formed by multiple sliders. Compared with the mold formed in one piece in the prior art, the mold formed by multiple sliders is more popular and can be applied to larger and longer plastic products. The number of sliders can be adjusted according to the actual size of the sliders, and it can be quickly replaced, thereby realizing the molding of the mold, which can greatly shorten the production cycle and improve the precision.

[0065] like Figures 6-7 , Fig.11 and Fig.12 As shown, the rear mold core 7 includes a pressure strip mechanism 9, a spring block mechanism 12, an insert mechanism and a pressure edge mechanism. The insert mechanism is arranged in the middle part of the rear mold core 7 and is fixed on the positioning boss 21 of the rear mold core 7 by a second fixing member 22. The spring block mechanism 12 is arranged on both sides of the insert mechanism to control the formation of the inward buckle 2 on the injection molded part. The pressure strip mechanism 9 is arranged on the outer side of the spring block mechanism 12 away from the insert mechanism, and the pressure strip mechanism 9 drives the spring block mechanism 12 to move, thereby forming an inward buckle structure. The pressure edge mechanism is arranged on the outer side and both ends of the spring block mechanism 12.

[0066] Preferably, the second fixing member 22 is provided as a screw for easy removal and replacement.

[0067] like Figures 11 to 14 As shown, the insert mechanism is formed by assembling multiple inserts, specifically including a first mold insert 11 arranged in the middle and two second mold inserts 15 arranged at both ends. The structure of assembling multiple mold inserts can adjust the size and number of mold inserts as needed, so that it is suitable for injection molding products of different lengths and has a wide range of uses.

[0068] like Figures 7-10 and Figures 24 to 29As shown, the spring block mechanism 12 is formed by multiple sliders, including a spring block 17, a pressure block 18 and a first fixing member 19 for fixing the pressure block 18. The pressure block 18 is arranged on the upper part of the pressure strip mechanism 9, one end of the pressure block 18 is fixed on the pressure strip mechanism 9 through the first fixing member 19, and the other end of the pressure block 18 is buckled on the spring block 17. The spring block 17 is set as a triangular structure, and a notch is set on the side of the spring block 17 facing the pressure block 18, so that the pressure block 18 is buckled on the spring block 17. The other side of the spring block 17 is set as an inclined surface structure, and an inwardly concave guide groove 34 is set inside the inclined surface of the spring block 17. The guide groove 34 can slide along the slide rail. The spring block 17 slides along the slide rail to make the inward buckle 2 smoothly formed. In this embodiment, the spring block mechanism is set as a structure formed by multiple sliders, which is not only suitable for injection molding parts that are larger, longer or have inward buckles, but also can accurately control the movement stroke and position of the spring block, realize fast lowering and fast changing, and rapid molding, while also avoiding sticking molds. Preferably, the first fixing member 19 is provided as a screw for easy removal and replacement.

[0069] The pressure strip mechanism 9 is configured as a pressure strip 20, which is used to support the spring block mechanism 12 and drive the spring block mechanism 12 to move. Positioning holes are provided on the pressure strip 20, and the first fixing member 19 passes through the positioning holes on the pressure block 18 and the pressure strip 20 to fix the pressure block 18 on the pressure strip 20. When the push plate 5 drives the rear template 4 to move upward, the pressure block 18 is pushed upward by the pressure strip 20. The structural setting of the spring strip mechanism and the pressure strip mechanism makes the series of movement processes of forming the inward buckle compact, accurately controls the movement stroke and position of the spring block, ensures the smooth forming of the inward buckle 2, and reduces the defective rate.

[0070] The edge clamping mechanism is wrapped around the outer side and both ends of the spring block mechanism 12. Specifically, the edge clamping mechanism includes a first edge clamping 10 and a second edge clamping 14. The first edge clamping 10 is arranged on the outer side of the pressure strip 20 away from the insert mechanism, and the second edge clamping 14 is arranged at both ends of the spring block mechanism 12. The setting of the edge clamping mechanism further divides the rear mold core 7 into more block structures, which is convenient for disassembly and installation and replacement of local parts, and is convenient for long-term and stable use of the entire mold.

[0071] like Figures 16-20 , Figures 24 to 29As shown, a shovel base 16 is fixedly provided on the push plate 5, and the shovel base is fixed on the push plate 5 by the third fixing member 23, and the shovel base 16 protrudes and extends upward. The side surface of the shovel base 16 close to the top is set as an inclined surface 161, and a guide block 31 is set on the inclined surface 161. The guide block 31 is vertically installed on the inclined surface 161 through the fifth fixing member 32, and the guide block 31 extends outward to form a slide rail for the guide groove 34 to slide. The inclined surface 161 cooperates with the inclined surface structure of the spring block 17 in the spring block mechanism 12, so that when the guide groove 34 slides along the guide block 31, it will not only move upward along the Z axis, but also move along the negative direction of the X axis, thereby forming the inward buckle 2. Preferably, the third fixing member 23 is set as a screw.

[0072] An elastic member 24 is also provided in the push plate 5, and the elastic member 24 is fixed to the elastic base 25 through the sixth fixing member 26, and the elastic base 25 is installed in the mounting hole 27 at the bottom of the push plate 5. When the mold is closed, the elastic member 24 is in a compressed state; when the mold is opened, the elastic member 24 has an elastic force in the positive direction of the Z axis, which prompts the rear template 4 to move in the positive direction of the Z axis, thereby driving the holding strip 20 to push the pressing block 18 to move upward.

[0073] Preferably, the elastic member 24 may be provided as a nitrogen spring, the elastic base 25 may be provided as a spring base, and the sixth fixing member 26 may be provided as a screw.

[0074] Furthermore, a limiting structure is provided on one side of the rear template 4 and the push plate 5 to limit the travel of the rear template 4. Specifically, the limiting structure includes a first limiting block 28 and a second limiting block 29, and the lower parts of the first limiting block 28 and the second limiting block 29 are fixed to the side of the push plate 5 by a fourth fixing member 30.

[0075] The second limit block 29 includes a first protrusion 291 arranged at the upper part, a second protrusion 292 arranged at the lower part, and a connecting plate 293 in the middle part. A mounting hole is arranged on the second protrusion 292 at the lower part, and the fourth fixing member 30 fixes the lower end of the second limit block 29 to the push plate 5 through the mounting hole on the second protrusion 292. The first protrusion 291 at the upper part is hooked on the side of the rear template 4, and a groove is arranged at the position corresponding to the limiting structure on the side of the rear template 4. When the push plate 5 pushes the rear template 4 to move upward, the first protrusion 292 on the first limit block 28 is hooked in the groove on the side of the rear template 4. In this way, the movement stroke and position of the rear template 4 are accurately controlled, which plays a good limiting role and prevents the slider on the rear template 4 from exceeding the predetermined movement range.

[0076] Preferably, the fourth fixing member 30 is configured as a screw.

[0077] In order to introduce the present invention more clearly, a series of movements of each structure in the injection mold are further introduced as follows:

[0078] like Fig.15a , Figures 24-26 As shown, when the mold is in the injection molding state, the mold is in the mold closing state, at this time, the push plate 5, the rear template 4, and the front template 3 are closely arranged and stacked from bottom to top, and the rear template 4 and the front template 3 are in the mold closing state. At this time, the nitrogen spring is fixed to the spring base in the push plate 5 by the sixth fixing member 26, and the nitrogen spring is in a compressed state; the shovel base 16 is fixed on the push plate 5, and the shovel base 16 and the spring block 17 are in a holding state, and the upper surface of the shovel base 16 is flush with the upper surface of the spring block 17.

[0079] like Fig.15b , Fig.15c , Figures 27-29 As shown, when the mold injection is completed, the mold is opened, and the nitrogen spring on the push plate 5 has an elastic force along the positive direction of the Z axis, which prompts the rear template 4 to move upward along the positive direction of the Z axis, so that the pressure strip 20 on the rear template 4 pushes the pressure block 18 and the spring block 17 upward to move upward. Due to the matching relationship between the guide groove 34 on the spring block 17 and the guide block 31 on the shovel base 16, the spring block 17 moves upward along the positive direction of the Z axis while being accompanied by movement along the negative direction of the X axis, thereby causing the molding of the inward buckle.

[0080] The injection mold provided in this embodiment sets the mold core to a structure formed by inlaying multiple sliders, which is not only suitable for longer and larger injection molded parts, but also convenient for adjusting the number and structure of sliders according to the size of the required injection molded parts, and has strong applicability. The newly added spring block mechanism and the spring work closely together to achieve fast lowering, fast replacement, and fast ejection of the spring block, which not only improves production efficiency, but also solves the problem of mold sticking in the prior art. The limit structure is set on the side of the rear template and the push plate, which can accurately control the movement stroke and position of the rear template and the slider in the rear template, realize accurate control of the structure and size of the injection molded parts, and reduce the defective rate.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold, comprising a front mold plate (3), a rear mold plate (4) and a push plate (5), wherein the front mold plate (3) covers the rear mold plate (4), and the push plate (5) is arranged below the rear mold plate (4), and the push plate (5) pushes the front mold plate (3) and the rear mold plate (4) to move upward, characterized in that: A front mold core (8) is embedded in the front mold plate (3), and a rear mold core (7) is embedded in the rear mold plate (4). The rear mold core (7) is configured to be formed by assembling a plurality of slide blocks. The rear mold core (7) comprises a pressure strip mechanism (9), a spring block mechanism (12), an insert mechanism and an edge pressing mechanism, wherein the insert mechanism is arranged in the middle of the rear mold core (7), and the spring block mechanism (12) is arranged on both sides of the insert mechanism, and is used to control the formation of an inward buckle (2) on the injection molded part; The pressure strip mechanism (9) is arranged on the outer side of the spring block mechanism (12) away from the insert block mechanism, and the pressure strip mechanism (9) drives the spring block mechanism (12) to move. The edge pressing mechanism is arranged on the outer side and both ends of the spring block mechanism (12), and the edge pressing mechanism includes a first edge pressing (10) and a second edge pressing (14); The insert mechanism is formed by assembling a plurality of inserts, and the insert mechanism comprises a first mold insert (11) arranged in the middle and two second mold inserts (15) arranged at both ends.

2. The injection mold according to claim 1, characterized in that: The spring block mechanism (12) is configured to be formed by inlaying a plurality of slide blocks, the spring block mechanism (12) comprising a spring block (17), a pressure block (18) and a first fixing member (19) for fixing the pressure block (18), the pressure block (18) being arranged on the upper part of the pressure strip mechanism (9), one end of the pressure block (18) being fixed to the pressure strip mechanism (9) via the first fixing member (19), and the other end of the pressure block (18) being buckled on the spring block (17).

3. The injection mold according to claim 2, characterized in that: The spring block (17) is configured as a triangular structure, a notch is provided on one side of the spring block (17) facing the pressure block (18), the other side of the spring block (17) is configured as an inclined surface structure, and an inwardly recessed guide groove (34) is provided inside one side of the inclined surface of the spring block (17), and the guide groove (34) can slide along the slide rail.

4. The injection mold according to claim 1, characterized in that: The pressure strip mechanism (9) is configured as a pressure strip (20) for supporting the spring block mechanism (12) and driving the spring block mechanism (12) to move. A positioning hole is provided on the pressure strip (20). The first fixing member (19) passes through the positioning holes on the pressure block (18) and the pressure strip (20) to fix the pressure block (18) on the pressure strip (20).

5. The injection mold according to claim 1, characterized in that: A shovel base (16) is fixedly arranged on the push plate (5), the shovel base (16) protrudes and extends upward, a slope (161) is arranged on the side surface of the shovel base (16) close to the top, a guide block (31) is arranged on the slope (161), the guide block (31) is vertically installed on the slope (161), and the guide block (31) extends outward to form a slide rail for the guide groove (34) to slide.

6. The injection mold according to claim 1, characterized in that: A limiting structure is provided on one side of the rear template (4) and the push plate (5), the limiting structure comprising a first limiting block (28) and a second limiting block (29), and the lower parts of the first limiting block (28) and the second limiting block (29) are fixed to the side of the push plate (5) via a fourth fixing member (30), and a groove is provided on the side of the rear template (4) at a position corresponding to the limiting structure.

7. A method for forming a buckle of an injection mold, characterized in that: Using the injection mold according to any one of claims 1 to 6, during the injection molding state, the mold is in a mold closing state, the shovel base (16) is fixed on the push plate (5), and the shovel base (16) and the spring block (17) are in a holding state; When the injection molding is completed, the mold is opened, and the elastic member on the push plate (5) has an elastic force along the positive direction of the Z axis, which causes the rear template (4) to move upward along the positive direction of the Z axis. The pressure strip (20) on the rear template (4) pushes the pressure block (18) upward to move, and the pressure block (18) drives the guide groove (34) on the spring block (17) to slide along the guide block (31), so that the spring block (17) moves upward along the positive direction of the Z axis while also moving along the negative direction of the X axis, thereby forming an inward buckle.

Images