A mold for changing a parting line and changing ejection to solve product top damage

Abstract

This utility model relates to the field of mold technology and discloses a mold that changes the parting line and ejection angle to solve the problem of product damage during ejection. It includes a front mold and a rear mold, with a cavity formed between them for molding the product. The parting line between the front and rear molds extends downwards to the bottom of one side of the rear mold, changing the original complete contact between the front and rear molds to a large-angle rubbing contact between the front mold and the rear mold. The top of the front mold and the bottom of the moving mold core of the rear mold are contacted. The ejector pins of the front mold, aligned with the easily damaged product position, are flat ejector pins; the ejector pins of the rear mold, also aligned with the easily damaged product position, are flat ejector pins. The parting line is located at the bottom of the rear mold, and the large-angle rubbing design of the front mold solves the problems of uneven force distribution at the edge of the square hole and chamfering during ejection caused by the traditional parting line being in the center. This ensures uniform force distribution on the product during ejection and reduces skewing. The flat ejector pins increase the contact area with the product, reducing unit pressure, and changing the ejection damage marks from "dot-like depressions" to "shallow linear marks" or even no marks, thus avoiding ejection damage.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a mold that changes the parting line and the ejection process to solve the problem of product damage during ejection. Background Technology

[0002] In the mold manufacturing process, the ejection mechanism is an important component of the mold, and its function is to eject the molded product from the mold. However, traditional molds often cause problems such as ejector pins damaging the product during ejection, for example, leaving ejection marks on the product surface or even causing chamfers. This not only affects the appearance quality of the product, but may also affect its mechanical properties and functionality.

[0003] For example, during the production of a plastic part sample (model DP14960T0), issues arose such as a piece being chipped off, the umbrella-shaped part being deformed, and ejector pins damaging the product surface due to ejection problems. Analysis revealed that excessive ejection force, product imbalance during ejection, and high demolding resistance were the main causes of these problems. Traditional solutions, such as reducing the ejection distance of the ejector block and adjusting the ejector pin height, were not ideal and could not completely solve the problem of product damage during ejection. Utility Model Content

[0004] The purpose of this utility model is to provide a mold that changes the parting line method and the ejection method to solve the problem of product damage during ejection, thereby solving the problem of product damage during ejection of traditional molds and improving product quality and production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mold that changes the parting line and the ejection process to solve product ejection damage includes a front mold and a rear mold, with a cavity for molding the product formed between the front mold and the rear mold; the parting line between the front mold and the rear mold is extended downward to the bottom of the rear mold side, changing the original complete penetration of the front mold and the rear mold to large-angle rubbing penetration of the front mold, and the top of the front mold and the bottom of the moving mold core of the rear mold penetration.

[0007] The front mold includes a fixed mold base plate, a fixed mold plate located above the fixed mold base plate, and a fixed mold core located on the fixed mold plate. The fixed mold core is provided with several front mold inserts, sprue bushings, runner channels, and return rods for front mold ejection. The front mold ejection plate base plate is provided with several sets of front mold ejector pins that pass through the front mold ejection plate panel, the fixed mold plate, and the fixed mold core and cooperate with the front mold inserts to abut against them. The front mold ejector pins that are aligned with the positions of the product that are easily damaged by ejection are flat ejector pins.

[0008] The rear mold includes a mold base plate, a rear mold ejector plate base plate located above the mold base plate, a rear mold ejector plate face plate located above the rear mold ejector plate base plate, a moving mold pad plate, a moving mold template located above the moving mold pad plate, a moving mold core located on the moving mold template plate, a moving mold insert located on the moving mold core, a runner that is inserted and positioned in conjunction with the runner groove, a slider located on the runner and inserted and guided in conjunction with the sprue sleeve, and a spring limit block located between the two moving mold inserts;

[0009] The rear mold ejector plate base plate is provided with several sets of rear mold ejector pins that pass through the rear mold ejector plate panel, the moving mold pad plate and the moving mold template and are set and cooperate with the moving mold insert to abut. The rear mold ejector pins that are aligned with the positions that are prone to damaging the product are flat ejector pins.

[0010] Preferably, the fixed mold base plate is provided with a front mold ejector plate base plate, and the inner side of the front mold ejector plate base plate is provided with a front mold ejector plate panel extending into the fixed mold plate. The front mold ejector plate base plate and the front mold ejector plate panel are provided with front mold ejector plate guide sleeves that cooperate with and guide the front mold ejector plate guide pillars on both sides of the sprue bushing. Several springs A are arranged on the front mold ejector plate panel, extending into the front mold ejector plate base plate and used for front mold ejection.

[0011] Preferably, the front mold insert is provided with a spring B for ejecting the front mold insert; the fixed mold core is connected to two cooling water connectors A that pass through the fixed mold plate; the front mold ejection is fixed to the bottom plate of the front mold ejection plate by a return rod and extends through the front mold ejection plate panel to the surface of the fixed mold core; the sprue bushing is provided through the fixed mold core, the fixed mold plate, the front mold ejection plate panel and the bottom plate of the front mold ejection plate.

[0012] Preferably, the four corners of the rear mold ejector plate bottom plate are provided with four moving mold return rods that pass through the rear mold ejector plate panel, the moving mold pad, and the moving mold template. A mold ejection spring C located between the moving mold pad and the rear mold ejector plate panel is sleeved on a guide rod that passes through the rear mold ejector plate bottom plate and the rear mold ejector plate panel on the mold bottom plate. Two cooling water connectors B that pass through the moving mold template are connected to the moving mold core. The mold bottom plate is provided with several support columns that pass through the rear mold ejector plate bottom plate and the rear mold ejector plate panel and are fixedly connected to the moving mold pad.

[0013] Preferably, the mold base plate is provided with several ejection guide pillars and guide sleeves that pass through the rear mold ejector plate base plate and the rear mold ejector plate panel and abut against the moving mold pad plate; the rear mold ejector plate base plate is provided with equal-height screws that pass through the rear mold ejector plate panel and abut against the moving mold insert, and springs D for the moving mold insert are sleeved on the equal-height screws.

[0014] Preferably, the fixed template has four guide posts A at its four corners and four precision positioning blocks on its four sides. The front and rear sides of the fixed template have locking modules arranged diagonally, and the locking modules are installed on the fixed template by screws A.

[0015] Preferably, the four sides of the moving mold template are provided with precision positioning grooves for guiding the insertion of precision positioning blocks, the four corners of the moving mold template are provided with guide sleeves A for guiding the insertion of four guide posts A, and the moving mold template is provided with pressure strips for locking with locking modules.

[0016] Preferably, the fixed mold base plate is provided with lifting eye hole A, and the moving mold template is provided with lifting eye hole B.

[0017] Preferably, a pressure sensor for monitoring injection pressure is provided on one side of the mold base plate and the rear mold ejector plate.

[0018] Preferably, a counter is embedded in the moving mold template.

[0019] Compared with the prior art, the technical effects and advantages of this utility model are:

[0020] In operation, this invention first involves closing the mold and injecting molten plastic material, which then cools and solidifies within the cavity. After solidification, the drive device moves the ejector plate, and the flat ejector pins eject the product. The parting line is located at the bottom of the rear mold and employs a large-angle rubbing design from the front mold, ensuring uniform force on the product during ejection and reducing skewing. The flat ejector pins increase the contact area with the product, reducing unit pressure and preventing ejection damage. Spring A in the front mold ejection mechanism buffers the ejection impact force, and the front mold insert is elastically ejected by spring B to prevent sticking to the product. Spring C in the rear mold provides a stable ejection driving force, and spring D, in conjunction with the equal-height screw, controls the ejection force of the moving mold insert. A spring-loaded limit block restricts the ejection distance, ensuring smooth demolding. Cooling water connectors A and B circulate for cooling, shortening the cooling time. A pressure sensor monitors the injection pressure, and a counter records the number of uses, ensuring stable mold operation.

[0021] This invention breaks through the traditional fully through-hole design by moving the parting line of the square hole to the bottom of the rear mold and using a large-angle rubbing through. This solves the problems of uneven force on the edge of the square hole and the chamfering during ejection caused by the traditional parting line being in the middle. At the same time, it allows the main body of the product, whose umbrella diameter is greater than the thickness of the main body, to be demolded first, giving the umbrella sufficient deformation space and avoiding damage from hard extrusion (such as the umbrella being stretched and deformed). Using flat ejector pins instead of round ejector pins increases the contact area and reduces the pressure. Ejection marks change from "dot-like depressions" to "shallow linear marks" or even no marks. In addition, a combination of round and flat ejector pins is used to address the strength differences in different areas of the product, balancing ejection efficiency and product protection. The elastic ejection structure (spring A, spring C, spring D) buffers the impact force, prevents product deformation, and extends the mold life.

[0022] This utility model features a guide post A that works in conjunction with a precision positioning block to control the mold closing error within 0.01mm, preventing flash and square hole deformation caused by misalignment. The diagonal locking module can withstand large mold closing forces, preventing the mold from opening during injection. A pressure sensor provides real-time pressure data feedback to optimize injection parameters, and a counter reminds users to maintain the mold, reducing the risk of ejection damage due to wear.

[0023] Compared with traditional molds, this invention significantly reduces product defect rates and improves production efficiency. It can reduce manual mold repair costs by solving the problem of top damage. It is suitable for high-precision products such as automotive connectors and demonstrates high practicality and economy in mass production. Attached Figure Description

[0024] Figure 1 This is a diagram showing the state of the front and rear molds of this utility model when they are closed.

[0025] Figure 2 This is a first-view view of the front mold of this utility model;

[0026] Figure 3 This is a second-view view of the front mold of this utility model;

[0027] Figure 4 This utility model Figure 3 Perspective view;

[0028] Figure 5 This is a first-view view of the rear mold of this utility model;

[0029] Figure 6 This is a second-view view of the rear mold of this utility model;

[0030] Figure 7 This utility model Figure 6 A schematic diagram of the structure after the removal of the moving mold pad and the moving mold template;

[0031] Figure 8 The image shows a comparison of the present invention where the round pin is changed to a flat pin.

[0032] Figure 9 This is a schematic diagram of the parting line of the front mold and the rear mold of this utility model.

[0033] In the picture:

[0034] 101. Fixed mold base plate; 102. Fixed mold plate; 103. Front mold insert; 104. Sprue bushing; 105. Runner channel; 106. Return rod for front mold ejection; 107. Front mold ejection plate base plate; 108. Front mold ejection plate front plate; 109. Front mold ejection plate guide pillar; 110. Front mold ejection plate guide sleeve; 111. Spring A; 112. Front mold ejector pin; 113. Spring B; 114. Cooling water connector A; 115. Guide pillar A; 116. Precision positioning block; 117. Locking module; 118. Screw A; 119. Lifting eye hole A; 120. Fixed mold core;

[0035] 201. Mold base plate; 202. Rear mold ejector plate base plate; 203. Rear mold ejector plate front plate; 204. Moving mold pad plate; 205. Moving mold template plate; 206. Moving mold core; 207. Moving mold insert; 208. Runner; 209. Slider; 210. Spring limit block; 211. Moving mold return rod; 212. Mold ejection spring C; 213. Cooling water connector B; 214. Support column; 215. Rear mold ejector pin; 216. Precision positioning groove; 217. Guide sleeve A; 218. Pressure strip; 219. Lifting eye hole B; 220. Pressure sensor; 221. Counter; 222. Ejection guide post and guide sleeve; 223. Equal height screw; 224. Spring D;

[0036] 300. Flat thimble. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] The following combination Figures 1 to 9 This application will be described in further detail.

[0039] This application discloses a mold that alters the parting line and changes the ejection process to prevent ejection damage. The mold includes a front mold and a rear mold, with a cavity formed between them for molding the product. The parting line between the front and rear molds extends downwards to the bottom of the rear mold side, changing the original complete contact between the front and rear molds to a large-angle rubbing contact between the front mold and the bottom of the moving mold core 206 of the rear mold. Figure 9 As shown, changing the traditional parting line position results in more even force distribution on the product during ejection, avoiding skewing caused by an improper parting line position and reducing problems such as chamfering and chipping at the source. The large-angle rubbing design of the front mold reduces the undercut angle of the umbrella part, reducing friction during demolding and preventing the product from being deformed due to excessive resistance. The rearward shift of the parting line allows the main body of the product to demold first during the rear mold ejection, providing more deformation space for complex structures such as the umbrella part and avoiding damage caused by forced extrusion.

[0040] like Figures 2 to 4As shown, the front mold includes a fixed mold base plate 101, a fixed mold plate 102 located above the fixed mold base plate 101, and a fixed mold core 120 located on the fixed mold plate 102. The fixed mold core 120 is provided with a plurality of front mold inserts 103, a sprue bushing 104, a runner groove 105, and a return rod 106 for front mold ejection. A front mold ejection plate base plate 107 is provided inside the fixed mold base plate 101. A front mold ejection plate panel 108 extending into the fixed mold plate 102 is provided inside the front mold ejection plate base plate 107. Front mold ejection plate guide sleeves 110, which cooperate with and are guided by front mold ejection plate guide pillars 109, are provided on both sides of the sprue bushing 104 on the front mold ejection plate base plate 107 and the front mold ejection plate panel 108. A plurality of front mold ejection plate guide sleeves extending into the front mold ejection plate are arranged on the front mold ejection plate panel 108. The base plate 107 contains a spring A111 for ejecting the front mold. The base plate 107 of the front mold ejection plate is provided with several sets of front mold ejector pins 112 that pass through the front mold ejection plate panel 108, the fixed template 102, and the fixed mold core 120 and are engaged with the front mold insert 103 for abutment. The front mold insert 103 is provided with a spring B113 for ejecting the front mold insert 103. The fixed mold core 120 is connected to two cooling water connectors A114 that pass through the fixed template 102. The front mold ejection return rod 106 is fixed to the base plate 107 of the front mold ejection plate and extends through the front mold ejection plate panel 108 to the surface of the fixed mold core 120. The sprue bushing 104 passes through the fixed mold core 120, the fixed template 102, the front mold ejection plate panel 108, and the front mold ejection plate base plate 107.

[0041] The front mold ejector pin 112, which is aligned with the position of the product that is prone to being damaged, is replaced by a flat ejector pin 300. The flat ejector pin 300 replaces the round ejector pin, increases the contact area with the product (such as changing the circular cross section to a rectangle), reduces the unit pressure, and reduces ejector pin marks and surface damage (such as the problem of ejector pins damaging the product).

[0042] Spring A works in conjunction with the front mold ejector pin 112 to provide elastic ejection cushioning, preventing excessive impact force during ejection that could deform the product. It also ensures smooth ejection, reducing damage caused by uneven ejection speeds. The front mold insert 103 and spring B feature an elastic ejection design that facilitates separation of the insert from the product, preventing adhesion and tearing, especially suitable for demolding complex structures (such as umbrella-shaped inverted structures). Cooling water connector A rapidly reduces the front mold temperature through circulating cooling water, shortening product cooling time, improving production efficiency, and preventing product deformation caused by high temperatures.

[0043] like Figures 5 to 7As shown, the rear mold includes a mold base plate 201, a rear mold ejector plate base plate 202 located above the mold base plate 201, a rear mold ejector plate panel 203 located above the rear mold ejector plate base plate 202, a moving mold pad plate 204, a moving mold template 205 located above the moving mold pad plate 204, a moving mold core 206 located on the moving mold template 205, a moving mold insert 207 located on the moving mold core 206, a runner 208 that is inserted and positioned in conjunction with the runner groove 105, a slider 209 located on the runner 208 and inserted and guided in conjunction with the sprue sleeve 104, and a spring limit block 210 located between the two moving mold inserts 207.

[0044] The rear mold ejector plate base plate 202 has four moving mold return rods 211 at its four corners, which pass through the rear mold ejector plate panel 203, the moving mold pad plate 204, and the moving mold template 205. A guide rod on the mold base plate 201, which passes through the rear mold ejector plate base plate 202 and the rear mold ejector plate panel 203, is fitted with a mold ejection spring C212 located between the moving mold pad plate 204 and the rear mold ejector plate panel 203. The moving mold core 206 is connected to two cooling water connectors B213 that pass through the moving mold template 205. The mold base plate 201 has several rods that pass through the rear mold ejector plate base plate 202 and the rear mold ejector plate panel 203 and are connected to the moving mold pad plate 205. 04. A fixed support column 214; The rear mold ejector plate base plate 202 is provided with a number of rear mold ejector pins 215 that pass through the rear mold ejector plate panel 203, the moving mold pad 204 and the moving mold template 205 and are abutted by the moving mold insert 207; The mold base plate 201 is provided with a number of ejector guide pins and guide sleeves 222 that pass through the rear mold ejector plate base plate 202 and the rear mold ejector plate panel 203 and abut against the moving mold pad 204; The rear mold ejector plate base plate 202 is provided with equal-height screws 223 that pass through the rear mold ejector plate panel 203 and abut against the moving mold insert 207; The equal-height screws 223 are fitted with springs D224 for the moving mold insert 207;

[0045] The rear mold ejector pin 215, which is aligned with the position of the product that is prone to damage, is a flat ejector pin 300.

[0046] The flat ejector pin 300 works in conjunction with the equalizing screw 223 to expand the force-bearing area for easily damaged locations (such as the edge of the square hole or the umbrella part of the product). The equalizing screw 223 controls the ejection force through elastic ejection (spring D) to prevent excessive local pressure (such as the problem of ejector pins damaging the product).

[0047] The ejection spring C provides a stable ejection driving force, while the elastic cushioning prevents the ejector plate from impacting the mold base plate 201, extending the mold life. The moving mold insert 207 springs out elastically (spring D), ensuring that the insert ejects synchronously with the product, preventing the insert from getting stuck and causing product deformation. This is especially suitable for demolding complex structures such as square holes and ribs. The spring-loaded limit block 210 limits the ejection distance of the moving mold insert 207, preventing the insert from excessively ejecting and damaging the product, while ensuring accurate insert resetting and avoiding interference during mold closing.

[0048] like Figure 9 As shown, the traditional method of designing the parting line of the square hole in the middle is changed. Instead, the parting line of the square hole is extended downward and set at the bottom of the rear mold side. This changes the original complete contact between the front mold and the rear mold to a large-angle friction contact between the front mold and the bottom of the mold core of the rear mold.

[0049] Traditional methods of completely penetrating the parting line can easily lead to uneven stress on the edges of the square hole, resulting in chamfers during ejection (such as the problem of "the upper edge of the square hole being ejected crookedly, causing chamfers"). The revised method involves a large-angle rubbing through the bottom of the rear mold, with the top of the front mold rubbing against the bottom of the rear mold core. This concentrates the stress on the edges of the square hole during ejection, preventing the front mold ejector pin 112 from directly contacting easily damaged areas. For products where the umbrella diameter is larger than the body thickness, moving the parting line backward allows the body to demold first, providing sufficient deformation space for the umbrella during ejection and preventing damage caused by improper demolding sequence.

[0050] like Figure 8 As shown, point A is the original location of the product damage using a round pin; point B is the original location of the product damage where a combination of a round pin and a flat pin 300 is used; and point C uses a flat pin 300 instead of a traditional round pin to increase the contact area between the pin and the product, reduce pressure, and thus reduce the degree of product damage. Replacing a round pin with a flat pin 300: Taking a rectangular cross-section as an example, the contact area can be increased by 30% to 50% (specific data needs to be calculated based on product dimensions), the pressure is reduced, and the damage mark changes from a "dot-like depression" to a "linear shallow mark," or even disappears completely.

[0051] The combination of round ejector pins and flat ejector pins 300 (design at point B) addresses the strength differences in different areas of the product. Flat ejector pins 300 are used in easily damaged areas (such as thin walls and sharp corners), while round ejector pins are used in other areas, balancing ejection efficiency and product protection.

[0052] The fixed template 102 has four guide posts A115 at its four corners and four precision positioning blocks 116 on its four sides. Locking modules 117 are diagonally arranged on the front and rear sides of the fixed template 102, and are installed on the fixed template 102 with screws A118. The moving template 205 has precision positioning grooves 216 on its four sides that guide the insertion of the precision positioning blocks 116. Guide sleeves A217 are located at the four corners of the moving template 205 that guide the insertion of the four guide posts A115. Pressure strips 218 are provided on the moving template 205 to lock in place with the locking modules 117.

[0053] Guide pillars A (at the four corners of the fixed template 102) ensure precise alignment when the front and rear molds are closed, with an error controllable within 0.01mm, preventing flash and dimensional deviations (such as square hole position offset) caused by mold closing misalignment. The precision positioning block 116 cooperates with the precision positioning groove 216, and the four-sided precision positioning design further improves mold closing accuracy, making it especially suitable for high-precision products (such as automotive connectors) and preventing square hole deformation caused by mold misalignment.

[0054] The locking module 117 is set diagonally. After being fixed by screw A, it can withstand a large mold closing force, preventing the front mold and the rear mold from being pushed apart due to pressure during injection molding and avoiding the generation of flash.

[0055] The fixed mold base plate 101 is provided with a lifting eye hole A119, and the moving mold plate 205 is provided with a lifting eye hole B219. This facilitates mold hoisting and transportation. The load-bearing capacity of the lifting eye holes is designed to be 1.5 times the weight of the mold (e.g., a 5-ton mold is equipped with a 7.5-ton load-bearing lifting eye), ensuring operational safety and preventing damage to parts due to uneven force during mold handling.

[0056] A pressure sensor 220 for monitoring injection pressure is provided on one side of the mold base plate 201 and the rear mold ejector plate base plate 202.

[0057] The pressure sensor 220 monitors injection pressure and provides real-time feedback on in-mold pressure data. This data is used to adjust injection parameters (such as pressure and speed) to prevent excessive pressure from causing ejector pin deformation or product cracking, while also preventing insufficient pressure from leading to incomplete filling. The data can be stored for subsequent mold maintenance, such as using pressure fluctuations to assess mold wear (e.g., pressure drops when the side core-pulling gap increases).

[0058] A counter 221 is embedded in the moving mold template 205. The counter 221 records the number of times the mold is used. When the preset number of times (such as 50,000 times) is reached, maintenance is reminded to avoid problems such as ejector pin wear and parting line cracking caused by excessive use of the mold.

[0059] During mold operation, the front and rear molds are first closed, and molten plastic material is injected and cooled and solidified within the cavity. After the product is formed, an ejection operation is required. At this time, the drive device drives the ejector plate to move, and the ejector plate drives the flat ejector pins 300 to eject the product from the mold.

[0060] Because the parting line is located at the bottom of the rear mold side, the large-angle rubbing design of the front mold ensures more even force distribution on the product during ejection, reducing the possibility of product skewing. Simultaneously, the use of the flat ejector pin 300 increases the contact area with the product, reducing the pressure per unit area and effectively minimizing ejector pin damage.

[0061] In this embodiment, the mold used to produce the DP14960T0 model product is taken as an example for illustration. The front mold and rear mold of this mold are designed and manufactured according to the above technical solution.

[0062] First, extend the parting line of the square hole downwards and set it at the bottom of the rear mold side to achieve a large-angle rubbing through the front mold, with the top of the front mold and the bottom of the rear mold core touching each other. Then, use a flat ejector pin 300 in the ejection mechanism. The cross-sectional shape of the flat ejector pin 300 is rectangular (e.g., Figure 9 As shown in the figure, its width is designed reasonably according to the structure and size of the product to ensure sufficient contact area with the product.

[0063] During the trial molding process, the ejection speed and distance were controlled by adjusting the drive device of the ejection mechanism. After testing, the mold produced a smooth product surface without any ejection marks or chamfering issues, and the product's appearance quality and mechanical properties met the requirements.

[0064] Compared with traditional molds, the mold of this utility model significantly reduces the defect rate and improves production efficiency during the production process. At the same time, the mold has a reasonable structural design, simple manufacturing process, and low cost, making it highly practical and economical.

[0065] In summary, the mold provided by this utility model, which changes the parting line method and the ejection method to solve the problem of product damage during ejection, effectively solves the problem of product damage during ejection of traditional molds through reasonable structural design and improved ejection method, and has significant technical advantages and practical value.

[0066] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold that alters the parting line and changes the ejection process to prevent product damage during ejection, characterized in that, It includes a front mold and a rear mold, and a cavity for molding products is formed between the front mold and the rear mold; the parting line between the front mold and the rear mold extends downward to the bottom of the rear mold side, changing the front mold and the rear mold from completely touching each other to the front mold rubbing through at a large angle, and the top of the front mold and the bottom of the moving mold core (206) of the rear mold touching each other; The front mold includes a fixed mold base plate (101), a fixed mold plate (102) located above the fixed mold base plate (101), and a fixed mold core (120) located on the fixed mold plate (102). The fixed mold core (120) is provided with a number of front mold inserts (103), a sprue bushing (104), a runner groove (105), and a return rod (106) for front mold ejection. The front mold ejection plate base plate (107) is provided with a number of front mold ejector pins (112) that pass through the front mold ejection plate panel (108), the fixed mold plate (102), and the fixed mold core (120) and cooperate with the front mold inserts (103) to abut against the mold. The front mold ejector pins (112) that are aligned with the positions where the product is easily damaged are flat ejector pins (300). The rear mold includes a mold base plate (201), a rear mold ejector plate base plate (202) located above the mold base plate (201), a rear mold ejector plate panel (203) located above the rear mold ejector plate base plate (202), a moving mold pad plate (204), a moving mold template plate (205) located above the moving mold pad plate (204), a moving mold core plate (206) located on the moving mold template plate (205), a moving mold insert plate (207) located on the moving mold core plate (206), a runner plate (208) that is inserted and positioned in conjunction with the runner groove (105), a slider plate (209) located on the runner and inserted and guided in conjunction with the sprue bushing (104), and a spring limit block (210) located between the two moving mold insert plates (207). The rear mold ejector plate base plate (202) is provided with a number of rear mold ejector pins (215) that pass through the rear mold ejector plate panel (203), the moving mold pad plate (204) and the moving mold template (205) and are abutted by the moving mold insert (207). The rear mold ejector pins (215) that are aligned with the position of the product that is easily damaged are flat ejector pins (300).

2. The mold for changing the parting line and altering the ejection to solve product damage according to claim 1, characterized in that: The fixed mold base plate (101) is provided with a front mold ejector plate base plate (107). The front mold ejector plate base plate (107) is provided with a front mold ejector plate panel (108) extending into the fixed mold plate (102) on the inner side. The front mold ejector plate base plate (107) and the front mold ejector plate panel (108) are provided with front mold ejector plate guide sleeves (110) that cooperate with and guide the front mold ejector plate guide pillars (109) on both sides of the sprue sleeve (104). Several springs A (111) that extend into the front mold ejector plate base plate (107) and are used for front mold ejection are arranged on the front mold ejector plate panel (108).

3. A mold for changing the parting line and altering the ejection process to prevent product damage according to claim 2, characterized in that: The front mold insert (103) is provided with a spring B (113) for ejecting the front mold insert (103); the fixed mold core (120) is connected to two cooling water connectors A (114) that pass through the fixed template (102); the front mold ejection return rod (106) is fixed on the front mold ejection plate bottom plate (107) and extends through the front mold ejection plate panel (108) to the surface of the fixed mold core (120); the sprue bushing (104) is provided through the fixed mold core (120), the fixed template (102), the front mold ejection plate panel (108) and the front mold ejection plate bottom plate (107).

4. A mold for changing the parting line and altering the ejection process to prevent product damage according to claim 3, characterized in that: The four corners of the rear mold ejector plate (202) are provided with four moving mold return rods (211) that pass through the rear mold ejector plate (203), the moving mold pad (204) and the moving mold template (205). The mold base plate (201) is provided with a guide rod that passes through the rear mold ejector plate (202) and the rear mold ejector plate (203) and is fitted with a mold ejection spring C (212) located between the moving mold pad (204) and the rear mold ejector plate (203). The moving mold core (206) is connected to two cooling water connectors B (213) that pass through the moving mold template (205). The mold base plate (201) is provided with several support columns (214) that pass through the rear mold ejector plate (202) and the rear mold ejector plate (203) and are fixedly connected to the moving mold pad (204).

5. A mold for changing the parting line and altering the ejection process to prevent product damage according to claim 4, characterized in that: The mold base plate (201) is provided with several ejection guide pins and guide sleeves (222) that pass through the rear mold ejection plate base plate (202) and the rear mold ejection plate panel (203) and abut against the moving mold pad plate (204); the rear mold ejection plate base plate (202) is provided with equal-height screws (223) that pass through the rear mold ejection plate panel (203) and abut against the moving mold insert (207); the equal-height screws (223) are fitted with springs D (224) for the moving mold insert (207).

6. A mold for changing the parting line and altering the ejection process to prevent product damage according to claim 1, characterized in that: The fixed template (102) has four guide posts A (115) at its four corners and four precision positioning blocks (116) on its four sides. The fixed template (102) has locking modules (117) arranged diagonally on its front and rear sides. The locking modules (117) are installed on the fixed template (102) by screws A (118).

7. A mold for changing the parting line and altering the ejection process to prevent product damage according to claim 6, characterized in that: The four sides of the moving mold template (205) are provided with precision positioning grooves (216) for guiding the insertion of precision positioning blocks (116). The four corners of the moving mold template (205) are provided with guide sleeves A (217) for guiding the insertion of four guide posts A (115). The moving mold template (205) is provided with pressure strips (218) for locking with locking modules (117).

8. A mold for changing the parting line and altering the ejection process to prevent product damage according to claim 5, characterized in that: The fixed mold base plate (101) is provided with a lifting ring hole A (119), and the moving mold template (205) is provided with a lifting ring hole B (219).

9. A mold for changing the parting line and altering the ejection process to solve product damage as described in claim 5, characterized in that: A pressure sensor (220) for monitoring injection pressure is provided on one side of the mold base plate (201) and the rear mold ejector plate base plate (202).

10. A mold for changing the parting line and altering the ejection to solve product damage according to claim 1, characterized in that: A counter (221) is embedded in the moving mold template (205).

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