Injection mold and injection molding machine for part with through hole

Abstract

The utility model discloses an injection mold and an injection molding machine for a part with a through hole, the mold specifically comprises an inner mold piece, an outer mold piece, an inner mold piece and an outer mold piece, the inner mold piece comprises a first mounting cavity and a plurality of second mounting cavities; the second mounting cavity is obliquely arranged relative to the vertical direction; a mold base is mounted in the first mounting cavity; the plurality of L-shaped sliding blocks comprise transverse sliding blocks and vertical sliding blocks; the transverse sliding block is horizontally arranged, the included angle between the vertical sliding block and the transverse sliding block is smaller than 90 degrees, and the vertical sliding block can be inserted into the second mounting cavity; each transverse sliding block is provided with an annular side wall, and the annular side walls of all the L-shaped sliding blocks are combined to form an annular forming groove. The mold base and the annular forming groove can jointly bear an injection-molded part subjected to injection molding; and a plurality of collision penetrating blocks are arranged on each annular side wall. When the mold provided by the utility model is used for injection molding of an injection molding part with a touch penetrating hole or a hollow structure, the touch penetrating block on the mold can be automatically demolded.

Description

Technical Field

[0001] The utility model relates to, but is not limited to, the field of injection molds, and particularly relates to an injection mold and an injection molding machine for a part with a knockout hole. Background Art

[0002] There is a need for an injection molded part in a circular ring shape, and a knockout hole or a hollowed-out structure is provided on the peripheral wall of the injection molded part. In the existing injection molds, in order to injection mold such parts, one method is to provide an annular groove inside the mold, and a plurality of bumps are provided on the side wall of the annular groove according to the shape of the injection molded part as the knockout blocks inside the mold. In this way, when the injection molded part is formed, the injection material will leave a knockout hole and a hollowed-out structure at the position of the knockout block. However, for the parts injection molded by this method, the bumps in the mold will get stuck inside the knockout hole or the hollowed-out structure, resulting in difficult demolding of the parts, and even manual assistance for demolding is required, with low demolding efficiency. Therefore, there is an urgent need for an injection mold that can automatically demold the knockout blocks on the mold when injecting an injection molded part with a knockout hole or a hollowed-out structure. Summary of the Utility Model

[0003] The following is an overview of the subject matter described in detail in this article. This overview is not intended to limit the scope of protection of the claims.

[0004] An embodiment of the utility model provides an injection mold for a part with a knockout hole, which can realize the automatic demolding of the knockout blocks when demolding an injection molded part with a knockout hole or a hollowed-out structure.

[0005] In a first aspect, an embodiment of the utility model provides an injection mold for a part with a knockout hole, including:

[0006] An inner mold part, including a first installation cavity located at the center of the inner mold part and a plurality of second installation cavities arranged circumferentially around the first installation cavity; the internal space of the second installation cavity is inclined relative to the vertical direction, the bottom of the second installation cavity is close to the first installation cavity, and the top of the second installation cavity is far from the first installation cavity; a mold base that can be lifted and lowered is installed inside the first installation cavity.

[0007] A plurality of L-shaped sliders, including a horizontal slider and a vertical slider; the horizontal slider is arranged horizontally, the included angle between the vertical slider and the horizontal slider is less than 90°, and the vertical slider can be inserted into the second installation cavity; each horizontal slider is provided with an annular side wall, and the annular side walls of all the L-shaped sliders form an annular molding groove after combination; the mold base and the annular molding groove can jointly carry the injection molded part; a plurality of knockout blocks are provided on each annular side wall, and the knockout blocks are used to form knockout holes on the injection molded part during the injection process.

[0008] The injection mold for a part with a punching hole according to the first aspect embodiment of the present utility model has at least the following beneficial effects: According to the technical solution of the present utility model, due to the oblique setting of the internal space of the second installation cavity and the angle between the horizontal slider and the vertical slider being less than 90°, when the L-shaped slider rises, it does not rise in a direction perpendicular to the horizontal plane, but rises along the direction defined by the internal space of the second installation cavity. And since the bottom of the second installation cavity is close to the first installation cavity and the top of the second installation cavity is far from the first installation cavity, the horizontal part of the L-shaped slider will gradually move away from the direction where the first installation cavity is located during the rising process, thereby automatically moving the punching block located on the annular side wall away from the injection molded part, realizing the automatic demolding of the punching block.

[0009] In some embodiments of the present utility model, each of the internal spaces of the second installation cavities is provided with an obliquely arranged first stop block, and the inclination angle of the first stop block is the same as the inclination angle of the internal space of the second installation cavity; a stop block slot is arranged inside the vertical slider, and the geometric configuration of the space inside the stop block slot matches that of the first stop block; an air supply channel is arranged inside the first stop block; one end of the air supply channel is communicated with an air supply device, and the other end of the air supply channel is communicated with the stop block slot.

[0010] In some embodiments of the present utility model, each of the outer surfaces of the vertical sliders is provided with groove patterns.

[0011] In some embodiments of the present utility model, the outer surface of the first stop block is provided with a plurality of sealing grooves; each of the sealing grooves is sleeved with a sealing ring.

[0012] In some embodiments of the present utility model, among all the L-shaped sliders, including the first slider and the second slider, a diversion port is arranged between the horizontal part of the first slider and the horizontal part of the second slider; a diversion groove is also arranged on the inner mold part, and the outlet of the diversion groove is aligned with the diversion port.

[0013] In some embodiments of the present utility model, the annular side wall includes a groove side wall and a punching insert, and a plurality of the punching blocks are arranged on the side surface of the punching insert; a plug-in groove is also arranged on the horizontal slider, and a clamping column is also arranged on the punching insert, and the clamping column is detachably inserted into the plug-in groove.

[0014] In some embodiments of the present utility model, a bearing ring is arranged on the mold base, and a plurality of serrated notches are arranged on the bearing ring.

[0015] In some embodiments of the present utility model, a limiting block is arranged on the top surface of the inner mold part, and the limiting block is arranged beside the second installation cavity.

[0016] In some embodiments of the present utility model, the injection mold for the part with a punching hole further includes a mold panel, and a plurality of positioning posts are arranged on the mold panel; a fixed insertion hole is arranged on the bottom surface of the inner mold part, and the fixed insertion hole can be installed on the positioning posts.

[0017] In a second aspect, an embodiment of the present utility model provides an injection molding machine, including the injection mold for the part with a punching hole described in the above-mentioned aspect embodiment.

[0018] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will become obvious from the description, or be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the description, claims, and drawings. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the technical solutions of the present utility model, and constitute a part of the description. Together with the embodiments of the present utility model, they are used to explain the technical solutions of the present utility model, and do not constitute a limitation to the technical solutions of the present utility model.

[0020] Figure 1 is an overall schematic diagram of an injection mold for a part with a punching hole provided by an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of an injection molded part with a punching hole provided by another embodiment of the present utility model;

[0022] Figure 3 is a top view of the inner mold part provided by another embodiment of the present utility model;

[0023] Figure 4 is a side view of the L-shaped slider provided by another embodiment of the present utility model;

[0024] Figure 5 is a front view of the mold base provided by another embodiment of the present utility model;

[0025] Figure 6 is a schematic diagram before demolding of the injection mold provided by another embodiment of the present utility model;

[0026] Figure 7 is a schematic diagram after demolding of the injection mold provided by another embodiment of the present utility model;

[0027] Figure 8 is a schematic diagram of the annular forming groove formed by the L-shaped slider provided by another embodiment of the present utility model;

[0028] Figure 9 is a bottom view of the inner mold part provided by another embodiment of the present utility model.

[0029] Description of the reference numerals in the drawings: inner module 100, first installation cavity 110, second installation cavity 120, first stop block 121, air supply channel 122, sealing ring 123, mold base 130, bearing ring 131, serrated notch 132, diversion groove 140, fixed jack 150, L-shaped slider 200, transverse slider 210, annular side wall 211, side wall of the groove body 212, piercing plug 213, plug slot 214, clamping post 215, piercing block 216, vertical slider 220, stop block slot 221, groove pattern 222, first slider 310, second slider 320, diversion port 330, limit block 400, injection molded part 500, piercing hole 510. Detailed implementation manners

[0030] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0031] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, and connecting should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0034] It should be noted that the embodiments of the present application do not limit any improvement of the method, and the functions that the device or apparatus can achieve are only realized based on the hardware architecture of the device or apparatus itself.

[0035] The concepts related to the present invention will be explained below.

[0036] PL surface: Parting Line, which is the line where two or more mold components (such as the moving mold and the stationary mold) separate when the mold is opened. The PL surface is the contact surface between the mold components. Along this line, the mold is designed to open to facilitate the removal of the molded plastic part.

[0037] The following further elaborates on the embodiments of the present invention in conjunction with the accompanying drawings.

[0038] Refer to Figures 1 to 7 , Figure 1 FIG. is an overall schematic diagram of an injection mold for a part having a punching hole 510 provided by an embodiment of the present invention. The mold specifically includes:

[0039] The inner mold part 100 includes a first installation cavity 110 located at the center of the inner mold part 100 and a plurality of second installation cavities 120 arranged circumferentially around the first installation cavity 110; the internal space of the second installation cavity 120 is inclined with respect to the vertical direction, the bottom of the second installation cavity 120 is close to the first installation cavity 110, and the top of the second installation cavity 120 is far from the first installation cavity 110; a mold base 130 that can be lifted is installed inside the first installation cavity 110;

[0040] A plurality of L-shaped sliders 200, the transverse slider 210 is horizontally arranged, the included angle between the vertical slider 220 and the transverse slider 210 is less than 90°, and the vertical slider 220 can be inserted into the second installation cavity 120; each transverse slider 210 is provided with an annular side wall 211, and the annular side walls 211 of all the L-shaped sliders 200 form an annular molding groove after combination; the mold base 130 and the annular molding groove can jointly carry the injection molded part 500; a plurality of punching blocks 216 are provided on each annular side wall 211, and the punching blocks 216 are used to form punching holes 510 on the injection molded part 500 during the injection molding process.

[0041] It should be noted that the inner mold part 100 is a component for carrying the mold base 130 and the L-shaped sliders 200. The structure of the inner mold part 100 is as shown in Figure 3 shown, the structure of the L-shaped slider 200 is as shown in Figure 4 shown, and the bearing base is as shown in Figure 5As shown in the figure. Among them, the mold base 130 is liftably arranged in the first installation cavity 110, and the L-shaped slider 200 is also liftably inserted into the second installation cavity 120. The transverse slider 210 is the part parallel to the inner mold part 100, and the vertical slider 220 is the part inserted into the second installation cavity 120. The annular forming groove formed by the mold base 130 and the L-shaped slider 200 can jointly carry the injection molded part 500. A piercing block 216 for forming an irregular piercing hole 510 on the injection molded part 500 is arranged on the annular side wall 211 of the L-shaped slider 200. During the closed injection molding process, after the injection molded part 500 is formed, the injection molding material will wrap around the piercing block 216 (similar to the piercing block 216 being embedded in the piercing hole 510). At this time, after the piercing block 216 is removed from the injection molded part 500, the vacant part on the injection molding machine 500 is the piercing hole 510. Further, since the piercing block 216 is embedded in the injection molded part 500 after injection molding, the injection molded part 500 cannot be directly removed from the mold base 130. The piercing block 216 must be first removed from the piercing hole 510. The annular forming groove and the piercing block 216 are as Figure 7 shown. Further, as Figure 6 , Figure 7 shown, due to the oblique setting of the internal space of the second installation cavity 120 and the included angle between the transverse slider 210 and the vertical slider 220 being less than 90° ( Figure 4 as shown by the dashed box a in the figure), when the L-shaped slider 200 rises, it does not rise in a direction perpendicular to the horizontal plane, but rises along the direction defined by the internal space of the second installation cavity 120. And since the bottom of the second installation cavity 120 is close to the first installation cavity 110 and the top of the second installation cavity 120 is far from the first installation cavity 110, the horizontal part of the L-shaped slider 200 will gradually move away from the direction where the first installation cavity 110 is located during the rising process, and further the piercing block 216 located on the annular side wall 211 will also gradually move away from the injection molded part 500, that is, gradually pulled out from the piercing hole 510. At this time, it only needs to be removed from the mold base 130. It can be understood that the mold base 130 and the L-shaped slider 200 rise simultaneously, so that the mold base 130 and the L-shaped slider 200 will not interfere with each other during the demolding process of the injection molded part 500. As long as an annular forming groove can be formed, the number of L-shaped sliders 200 can be arbitrarily set according to requirements, but not less than two. In an embodiment of the present invention, 4 L-shaped sliders 200 are used to form the annular forming groove.

[0042] Referring to Figure 4 , Figures 6 to 7, in some embodiments of the present utility model, an obliquely arranged first stop block 121 is provided inside each second installation cavity 120, and the inclination angle of the first stop block 121 is the same as the inclination angle of the internal space of the second installation cavity 120; a stop block slot 221 is provided inside the vertical slider 220, and the geometric configuration of the internal space of the stop block slot 221 matches that of the first stop block 121; a gas supply channel 122 is provided inside the first stop block 121; one end of the gas supply channel 122 is communicated with a gas supply device, and the other end of the gas supply channel 122 is communicated with the stop block slot 221.

[0043] It should be noted that, as Figure 4 , Figures 6 to 7 shown, in the embodiment of the present utility model, the L-shaped slider 200 is pushed out of the second installation cavity 120 by a pneumatic device. Before the PL surface of the mold is opened, the gas supply device supplies gas into the gas supply channel 122 in advance. Since the stop block slot 221 is communicated with the gas supply channel 122, when the PL surface is opened, the L-shaped slider 200 is no longer restricted by the PL surface of the mold and is ejected from the second installation cavity 120. Inside, by making the inclination angle of the first stop block 121 the same as the inclination angle of the internal space of the second installation cavity 120, and the geometric configuration of the internal space of the stop block slot 221 matching that of the first stop block 121, such a design can ensure that the first stop block 121 and the stop block slot 221 are as closed as possible during the upward movement of the slider, enabling the gas supply device to eject the vertical slider 220 from the inside of the second installation cavity 120 without supplying a strong air pressure.

[0044] Referring to Figure 4 , Figure 8 , in some embodiments of the present utility model, a groove pattern 222 is provided on the outer surface of each vertical slider 220.

[0045] It should be noted that the groove pattern 222 in the embodiment of the present utility model is used to reduce the friction between the vertical slider 220 and the second installation cavity 120, enabling the gas supply device to eject the vertical slider 220 from the inside of the second installation cavity 120 without supplying a strong air pressure.

[0046] Referring to Figure 4 , in some embodiments of the present utility model, a plurality of sealing grooves are provided on the outer surface of the first stop block 121; a sealing ring 123 is sleeved in each sealing groove.

[0047] It should be noted that during the ejection process of the L-shaped slider 200, the outer surface of the first stop block 121 contacts the inner space of the stop block slot 221. To prevent air leakage through the gap between the outer surface of the first stop block 121 and the inner space of the stop block slot 221, which may lead to an unsatisfactory ejection effect of the L-shaped slider 200 and affect the removal of the punching block 216 from the punching hole 510, a sealing ring 123 is provided on the outer surface of the first stop block 121 to improve the airtightness between the outer surface of the first stop block 121 and the inner space of the stop block slot 221.

[0048] Referring to Figure 1 , Figure 8 , in some embodiments of the present invention, among all the L-shaped sliders 200, including the first slider 310 and the second slider 320, a diversion port 330 is provided between the transverse portions of the first slider 310 and the second slider 320; a diversion groove 140 is further provided on the inner mold member 100, and the outlet of the diversion groove 140 is aligned with the diversion port 330.

[0049] It should be noted that as Figure 1 and Figure 7 shown by the dashed boxes, the diversion port 330 and the diversion groove 140 are channels from the nozzle of the injection molding machine to the mold gate, used to guide the molten plastic into the cavity of the mold. In the embodiments of the present invention, taking Figure 7 as an example, one end of the diversion groove 140 provided on the inner mold member 100 is connected to the injection device, and the other end is connected to the diversion port 330 provided between the two L-shaped sliders 200, and together with the annular side wall 211 of the L-shaped slider 200, it forms an annular molding groove. It can be understood that the first slider 310 and the second slider 320 are essentially L-shaped sliders 200 with an opening shown by the dashed box in Figure 7 between them.

[0050] Referring to Figure 4 , in some embodiments of the present invention, the annular side wall 211 includes a groove side wall 212 and a punching insert 213. A plurality of punching blocks 216 are provided on the side surface of the punching insert 213; the transverse slider 210 is further provided with a plug-in groove 214, and the punching insert 213 is further provided with a clamping post 215, and the clamping post 215 is detachably inserted into the plug-in groove 214.

[0051] It should be noted that as Figure 4 shown, in the embodiments of the present invention, the punching insert 213 on the L-shaped slider 200 is replaceable and detachable. When the shape of the punching hole 510 required for injection molding changes, the punching insert 213 can be installed on the groove side wall 212 through the cooperation of the clamping post 215 and the plug-in groove 214 to achieve the rapid replacement of the punching block 216 of the injection mold.

[0052] Referring to Figure 5, in some embodiments of the present utility model, a bearing ring 131 is provided on the mold base 130, and a plurality of serrated notches 132 are provided on the bearing ring 131.

[0053] It should be noted that, as Figure 5 shown, after the injection molding is completed, the mold base 130 injects the molded part 500 through the bearing ring 131. In order to stably place the molded part 500 on the bearing ring 131, a plurality of serrated notches 132 are provided on the bearing ring 131. During the injection molding process, the injection molding material will directly fill into the serrated notches 132, and after the molded part 500 is formed, it will be clamped in the serrated notches 132 and stably carried.

[0054] Referring to Figure 1 , in some embodiments of the present utility model, a limiting block 400 is provided on the top surface of the inner mold part 100, and the limiting block 400 is provided beside the second installation cavity 120.

[0055] It should be noted that, as Figure 1 shown, when the size of the required molded part 500 needs to be reduced, by reducing the size of the L-shaped slider 200, the corresponding injection mold is switched. At this time, since the size of the L-shaped slider 200 is reduced, the sizes of the second installation cavity 120 and the vertical slider 220 will no longer match. Therefore, the limiting block 400 is required to fill the vacant part between the new L-shaped slider 200 and the second installation cavity 120. Among them, the limiting block 400 can also be retractable. When the sizes of the second installation cavity 120 and the vertical slider 220 match, the limiting block 400 retracts, and when the sizes of the second installation cavity 120 and the vertical slider 220 do not match, the limiting block 400 extends.

[0056] In some embodiments of the present utility model, the injection mold for a part having a punching hole 510 further includes a mold panel, and a plurality of positioning columns are provided on the mold panel; a fixing jack 150 is provided on the bottom surface of the inner mold part 100, and the fixing jack 150 can be installed on the positioning columns.

[0057] It should be noted that, as Figure 9 shown, the embodiments of the present utility model can realize the simultaneous injection molding of multiple molded parts 500 by arranging a plurality of injection molds on a mold panel (not shown in the figure), and only need to insert the inner mold part 100 through the fixing jack 150 on the positioning columns (not shown in the figure). Further, since the included angle between the vertical slider 220 and the horizontal slider 210 is less than 90°, the overall volume of the mold is reduced, so that more molds can be arranged on one mold panel.

[0058] In a second aspect, an embodiment of the present utility model provides an injection molding machine, including the injection mold for a part having a punching hole 510 in the above-described aspect embodiments.

[0059] A specific embodiment is given below to illustrate the present utility model.

[0060] Such as Figure 1As shown in the figure, an injection mold for a part with a punching hole 510 includes an inner mold part 100 and four L-shaped sliders 200. The inner mold part 100 has a first installation cavity 110 at the center of the inner mold part 100 and a plurality of second installation cavities 120 arranged circumferentially around the first installation cavity 110. A mold base 130 is installed inside the first installation cavity 110 and can be lifted. The mold base 130 is used to carry the injection molded part 500 after injection molding. A serrated notch 132 for fixing the injection molded part 500 is provided on the bearing ring 131 of the mold base 130. The internal space of the second installation cavity 120 is inclined with respect to the vertical direction. The bottom of the second installation cavity 120 is close to the first installation cavity 110, and the top of the second installation cavity 120 is far from the first installation cavity 110. The transverse slider 210 is horizontally arranged, and the included angle between the vertical slider 220 and the transverse slider 210 is less than 90°. The vertical slider 220 can be inserted into the second installation cavity 120, so that when the L-shaped slider 200 rises, its horizontal part will gradually move away from the direction where the first installation cavity 110 is located during the rising process. Furthermore, the piercing block 216 located on the annular side wall 211 will also gradually move away from the injection molded part 500, that is, gradually pull out from the piercing hole 510. A first stop block 121 is provided inside the second installation cavity 120, and a stop block slot 221 is provided on the vertical slider 220. During the installation process, the first stop block 121 is inserted into the stop block slot 221. An air supply channel 122 is provided inside the first stop block 121. The air supply channel 122 is respectively connected to an external air supply device and the stop block slot 221. Therefore, the L-shaped slider 200 can be lifted by ventilating the air supply device. A sealing ring 123 is wound around the outside of the first stop block 121 to prevent air leakage during the process of pushing up the first stop block 121. The vertical slider 220 is provided with groove patterns 222 for reducing friction. Among the four L-shaped sliders 200, each transverse slider 210 is provided with an annular side wall 211. The annular side walls 211 of all the L-shaped sliders 200 form a circular annular forming groove after combination. There is a notch in the annular forming groove, and this notch is used to reserve a position for the diversion groove 140. The mold base 130 and the annular forming groove can jointly carry the injection molded part 500. A plurality of piercing blocks 216 are provided on each annular side wall 211. During the injection molding process, the injection molding material can cover the piercing blocks 216. The piercing blocks 216 on the annular side wall 211 are detachable. The corresponding piercing inserts 213 are fixed to the transverse slider 210 through the clamping posts 215 and the insert slots 214. When it is necessary to change the type of the annular injection molded part 500, different models of L-shaped sliders 200 or piercing inserts 213 can be replaced, and the movement of the L-shaped sliders 200 is restricted by the limit blocks 400. A fixed jack 150 is also provided at the bottom of the inner mold part 100. The fixed jack 150 can be installed on the positioning post. By setting a plurality of positioning posts on the mold panel, the cascade connection of multiple injection molds can be realized.

[0061] The above is a specific description of the preferred embodiment of the present utility model. However, the present utility model is not limited to the above-mentioned embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of the present utility model.

Claims

1. An injection mold for a part with a punching hole, characterized in that, Comprising: An inner module, including a first installation cavity located at the center of the inner module and a plurality of second installation cavities circumferentially arranged around the first installation cavity; The internal space of the second installation cavity is inclined relative to the vertical direction. The bottom of the second installation cavity is close to the first installation cavity, and the top of the second installation cavity is far from the first installation cavity; A mold base that can be lifted is installed inside the first installation cavity; A plurality of L-shaped sliders, including a horizontal slider and a vertical slider; The horizontal slider is horizontally arranged, and the included angle between the vertical slider and the horizontal slider is less than 90°. The vertical slider can be inserted into the second installation cavity; Each of the horizontal sliders is provided with an annular side wall, and the annular side walls of all the L-shaped sliders form an annular molding groove after combination; The mold base and the annular molding groove can jointly carry the injection molded part; A plurality of knock-through blocks are arranged on each of the annular side walls, and the knock-through blocks are used to form knock-through holes on the injection molded part during the injection molding process.

2. The injection mold for a part with a punching hole according to claim 1, characterized in that, An inclined first stop block is arranged inside each of the second installation cavities, and the inclination angle of the first stop block is the same as the inclination angle of the internal space of the second installation cavity; A stop block slot is arranged inside the vertical slider, and the geometric configuration of the space inside the stop block slot matches that of the first stop block; An air supply channel is arranged inside the first stop block; One end of the air supply channel is communicated with an air supply device, and the other end of the air supply channel is communicated with the stop block slot.

3. The injection mold for the part with a collision hole according to claim 2, characterized in that, A groove pattern is arranged on the outer surface of each of the vertical sliders.

4. The injection mold for a part with a punching hole according to claim 2, characterized in that, A plurality of sealing grooves are arranged on the outer surface of the first stop block; A sealing ring is sleeved in each of the sealing grooves.

5. The injection mold for a part with a collision hole according to claim 1, characterized in that Among all the L-shaped sliders, including a first slider and a second slider, a diversion port is arranged between the horizontal part of the first slider and the horizontal part of the second slider; A diversion groove is also arranged on the inner module, and the outlet of the diversion groove is aligned with the diversion port.

6. The injection mold for a part with a punching hole according to claim 1, characterized in that The annular side wall includes a groove body side wall and a knock-through insert. A plurality of the knock-through blocks are arranged on the side surface of the knock-through insert; The horizontal slider is also provided with an insert slot, and the knock-through insert is also provided with a clamping column, and the clamping column is detachably inserted into the insert slot.

7. The injection mold for the part with a punching hole according to claim 1, characterized in that, A bearing ring is arranged on the mold base, and a plurality of serrated notches are arranged on the bearing ring.

8. The injection mold for a part with a punching hole according to claim 1, characterized in that, A limit block is arranged on the top surface of the inner module, and the limit block is arranged beside the second installation cavity.

9. The injection mold for a part with a collision hole according to claim 1, characterized in that, The injection mold for a part with a knock-through hole further includes a mold panel, and a plurality of positioning columns are arranged on the mold panel; A fixed jack is arranged on the bottom surface of the inner module, and the fixed jack can be installed on the positioning column.

10. An injection molding machine, characterized in that, Including the injection mold for a part with a knock-through hole according to any one of claims 1-9.

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