CN119305134A

CN119305134A - A-pillar lower trim injection mold

Info

Publication number: CN119305134A
Application number: CN202411638885.8A
Authority: CN
Inventors: 周为能; 曹小勇; 麻军飞; 曹海永
Original assignee: Ningbo Qingshanqing Auto Parts Co ltd
Current assignee: Ningbo Qingshanqing Auto Parts Co ltd
Priority date: 2024-11-18
Filing date: 2024-11-18
Publication date: 2025-01-14
Anticipated expiration: 2044-11-18
Also published as: CN119305134B

Abstract

The invention discloses an injection mold for a lower decorative plate of an A column, which comprises a front mold assembly and a rear mold assembly, wherein the front mold assembly comprises a front mold plate, a pouring gate push plate, a pull block and an inclined pull block, the pull block is fixedly arranged on the pouring gate push plate, one end of the inclined pull block is in inclined sliding fit with the pull block, the other end of the inclined pull block is provided with a first forming end, the rear mold assembly comprises a rear mold plate, a lateral sliding block, a pressing rod, a first inclined push block and a second inclined push block, the lateral sliding block is slidably arranged on the rear mold plate, the pressing rod is arranged on the lateral sliding block in a floating mode, one end of the pressing rod is a free end, the other end of the pressing rod is provided with a second forming end, the combination of the first forming end and the second forming end is used for forming a lap joint surface on the lower decorative plate, the first inclined push block is used for forming a supporting seat on the lower decorative plate, and the second inclined push block is used for forming a clamping hook on the lower decorative plate. The invention provides an injection mold for a lower decorative plate of an A column, wherein an inclined drawing block, a lateral sliding block and a compression bar are arranged in a front mold assembly and a rear mold assembly, and the gradual demolding of a complex structure is realized by precisely controlling multi-directional movement, so that the complete molding and the efficient production of the lower decorative plate are ensured.

Description

A post lower plaque injection mold

Technical Field

The invention relates to the technical field of automobile part molds, in particular to an injection mold for an A-column lower decorative plate.

Background

In automotive construction, an a-pillar lower trim panel is used primarily to cover the bottom area of an a-pillar structure, typically in the vicinity of a vehicle door. The assembly not only beautifies the internal design, but also plays a role in protecting and shielding the vehicle body structure. Because of its unique mounting location, the a-pillar lower trim panel presents certain technical challenges in design and manufacture, particularly during molding and demolding.

The lower pillar a trim shown in fig. 1 has a certain bending structure, and is usually tightly attached to the vehicle body in order to accommodate the curved shape of the vehicle. Meanwhile, one end of the connecting piece is provided with a special-shaped lap joint surface with a through hole, so that the connecting piece can be connected with other parts in a vehicle in a seamless manner. The bottom of the lower ornamental plate is provided with a supporting seat and a clamping hook, ensuring stable installation. However, the multi-directional structure of the support, the hooks and the landing surface increases manufacturing complexity, and particularly, the problem of demolding is easily generated during the injection molding process.

Conventional mold design methods employ front and back mold closures to form the faying surfaces. However, due to different orientations of the supporting seat and the clamping hook, an inclined ejection device is required to be added into the die, so that the die can be smoothly ejected after being molded. However, such designs increase the difficulty of mold fabrication and may affect the complete formation of the faying surface, resulting in problems of defective products or reduced efficiency in actual production.

Disclosure of Invention

The present invention aims to solve one of the technical problems in the related art to a certain extent. Therefore, the invention provides the injection mold for the lower decorative plate of the A column, wherein the oblique drawing block, the lateral sliding block and the compression bar are arranged in the front mold assembly and the rear mold assembly, and the gradual demolding of a complex structure is realized by precisely controlling the multi-directional movement, so that the complete molding and the efficient production of the lower decorative plate are ensured.

The invention adopts the technical scheme that an injection mold for a lower decorative plate of an A column is provided, and comprises a front mold component and a rear mold component;

The front die assembly comprises a front die plate, a pouring gate pushing plate, a pulling block and an inclined pulling block, wherein the pulling block is fixedly arranged on the pouring gate pushing plate, one end of the inclined pulling block is in inclined sliding fit with the pulling block, and the other end of the inclined pulling block is provided with a first forming end;

The back module comprises a back template, a lateral sliding block, a pressing rod, a first inclined jacking block and a second inclined jacking block, wherein the lateral sliding block is slidably arranged on the back template, the pressing rod is floatingly arranged on the lateral sliding block, one end of the pressing rod is a free end, the other end of the pressing rod is provided with a second forming end, the combination of the first forming end and the second forming end is used for forming a lap joint surface on a lower decorative plate, the first inclined jacking block is used for forming a supporting seat on the lower decorative plate, and the second inclined jacking block is used for forming a clamping hook on the lower decorative plate.

The design of the pouring gate pushing plate is adopted in the structure to explain that the die is of a three-plate die structure. In the mold opening process, the front mold plate is separated from the pouring channel pushing plate, and the pulling block drives the inclined drawing block to slide relative to the front mold plate so as to execute internal drawing action, so that the first forming end on the inclined drawing block is separated from contact with the lap surface on the lower decorative plate. The step effectively reduces the demoulding resistance and avoids the defect of the lap joint surface caused by forced demoulding. Next, the front and rear templates are further separated, with the two sides being relatively far apart, thereby pushing the mold open as a whole. At this time, the second molding end on the pressing rod is also separated from the other side of the overlap surface, so that the demolding of the overlap surface molding part is completed.

In addition, the configuration of the lateral slides increases the flexibility of the mold, allowing the mold to achieve precise demolding in multiple directions. The design simultaneously utilizes the first inclined top block and the second inclined top block to respectively form the supporting seat and the clamping hook, so that the complex lower ornamental plate structure can be smoothly demoulded after being integrally formed.

According to one embodiment of the invention, the spring is arranged between the pressure bar and the lateral sliding block, the spring has an elastic trend of enabling the pressure bar to move away from the oblique drawing block, and the spring provides continuous elastic tension to enable the pressure bar to automatically move away from the oblique drawing block, so that stable and efficient separation action is realized during demolding, and forming defects caused by friction or blocking are effectively avoided.

According to one embodiment of the invention, the front template is provided with the guide groove, the guide groove is tightly abutted against the free end of the pressing rod during die assembly, and the guide groove is tightly contacted with the free end of the pressing rod during die assembly, so that the stability and the accuracy of the position of the pressing rod are ensured, and the alignment degree of die closure and the molding accuracy of the decorative plate are improved.

According to one embodiment of the invention, the guide groove comprises a tight propping section and a loose opening section, the tight propping section is tightly propped against the free end when the die is closed, and the loose opening section moves to make a space for the compression bar to move away from the oblique drawing block when the die is opened, so that the compression bar can be smoothly released in the direction away from the oblique drawing block, and stable die stripping is realized.

According to one embodiment of the invention, the front template is fixedly provided with the inclined guide post, the lateral sliding block is provided with the inclined guide hole which is in sliding fit with the inclined guide post, and the lateral sliding block is ensured to move along a preset path under the guidance of the inclined guide post through the structure, so that the demolding direction is precisely controlled and the molding precision is optimized.

According to one embodiment of the invention, the lateral sliding block is provided with a mounting groove, the spring and the pressure bar are both arranged in the mounting groove, the second molding end of the pressure bar extends out of the mounting groove, the mounting groove is connected with a limiting block, the free end of the pressure bar extends out of the limiting block, and the mounting groove is connected with the limiting block to prevent the pressure bar from moving out of the mounting groove.

According to one embodiment of the invention, the pressing rod is provided with a shoulder, the spring is sleeved on the pressing rod, one end of the spring abuts against the shoulder, and the other end of the spring abuts against the bottom of the mounting groove.

According to one embodiment of the invention, the rear die assembly further comprises an ejection oil cylinder and a top plate, wherein the ejection oil cylinder is fixedly arranged on the rear die plate, a piston rod end of the ejection oil cylinder is fixedly connected with the top plate, the first inclined ejector block and the second inclined ejector block are fixedly arranged on the top plate, and the top plate can effectively push the inclined ejector block through the action of the oil cylinder, so that accurate ejection in the die opening process of a die is realized, and smooth demolding of a complex structure is ensured.

According to one embodiment of the invention, the top plate is fixedly provided with a first straight top block and a second straight top block.

According to one embodiment of the invention, the pull block is provided with an inclined plane and a T-shaped block positioned on the inclined plane, the inclined drawing block is provided with a T-shaped groove in sliding fit with the T-shaped block, the combination of the T-shaped block and the T-shaped groove forms an inclined wedge structure, and the linear motion of the front template and the runner push plate is changed into the inclined motion of the inclined drawing block.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a perspective view of a lower pillar trim panel of an embodiment of the present invention.

Fig. 2 is a perspective view of a front mold assembly according to an embodiment of the present invention.

FIG. 3 is a partial block diagram of a front mold assembly in accordance with an embodiment of the present invention.

Fig. 4 is a perspective view of a lower plaque and an oblique drawing block in an embodiment of the invention.

Fig. 5 is a perspective view of a rear mold assembly according to an embodiment of the present invention.

Fig. 6 is a perspective view of a lower plaque and a lateral slider according to an embodiment of the present invention.

FIG. 7 is a top view of a lower plaque and side slider according to an embodiment of the present invention.

Fig. 8 is a cross-sectional view taken along line A-A of fig. 7.

Fig. 9 is a perspective view of a side slider in an embodiment of the present invention.

Fig. 10 is a perspective view of a pressure lever in an embodiment of the present invention.

Fig. 11 is a partial block diagram of a rear mold assembly in accordance with an embodiment of the present invention.

Fig. 12 is a perspective view of an ejection portion of a rear mold assembly according to an embodiment of the present invention.

Fig. 13 is a perspective view of a first angled jack block and a rear mold insert in an embodiment of the present invention.

Fig. 14 is a perspective view of the oblique drawer block, the lower trim panel, and the lateral slider in an embodiment of the present invention.

FIG. 15 is a cross-sectional view of the diagonal draw bar, lower trim panel, and side slider in an embodiment of the present invention.

Fig. 16 is a partial enlarged view of a front template in an embodiment of the present invention.

The reference numerals in the figures illustrate:

10. A lower ornamental plate, a front die assembly, a rear die assembly and a rear die assembly;

11. 12, the overlap joint surface, 13, the trip;

21. Front template, 22, runner push plate, 23, distance pull rod, 24, guide post, 25, pull block, 26, oblique pull block, 27, oblique guide post, 28, guide groove;

25a, T-shaped blocks, 25b and inclined planes;

26a, T-shaped slot, 26b, first forming end;

28a, a tight section, 28b, a loose section;

31. Rear template, 32, mold legs, 33, lateral sliding blocks, 34, compression bar, 35, spring, 36, limiting block, 37, ejection cylinder, 38, top plate, 39, first oblique ejector block, 310, second oblique ejector block, 311, rear mold insert, 312, first straight ejector block, 313, second straight ejector block;

33a, oblique guide holes, 33b, mounting grooves;

34a, second shaped end, 34b, shoulder, 34c, free end.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Example 1

Referring to fig. 1, the injection molded product in this embodiment is an automotive pillar a lower trim panel 10, which has a curved shape as a whole. One end of the lower A-pillar trim 10 has a landing surface 12 with a square through hole. The outer surface of the lower plaque 10 is a decorative surface facing the space inside the vehicle, the inner surface is provided with a supporting seat 11 and a plurality of hooks 13, and the inner surface of the lower plaque 10 is provided with a reinforcing rib structure. The orientations of the supporting seat 11, the clamping hooks 13 and the lap joint surface 12 are different.

As shown in fig. 2-16, in the embodiment, an injection mold for a lower decorative plate 10 of an a-pillar is disclosed, which comprises a front mold assembly 20 and a rear mold assembly 30, wherein the front mold assembly 20 comprises a front mold plate 21, a runner push plate 22, a pull block 25 and an inclined pull block 26, the pull block 25 is fixedly arranged on the runner push plate 22, one end of the inclined pull block 26 is in inclined sliding fit with the pull block 25, and the other end of the inclined pull block 26 is provided with a first forming end 26b;

The rear module 30 comprises a rear template 31, a lateral sliding block 33, a pressing rod 34, a first inclined top block 39 and a second inclined top block 310, wherein the lateral sliding block 33 is slidably installed on the rear template 31, the pressing rod 34 is floatingly installed on the lateral sliding block 33, one end of the pressing rod 34 is a free end 34c, the other end of the pressing rod 34 is provided with a second forming end 34a, the combination of the first forming end 26b and the second forming end 34a is used for forming the lap joint surface 12 on the lower decorative plate 10, the first inclined top block 39 is used for forming the supporting seat 11 on the lower decorative plate 10, and the second inclined top block 310 is used for forming the hook 13 on the lower decorative plate 10.

As shown in fig. 2, in this embodiment, a plurality of distance rods 23 are provided between the front mold plate 21 and the runner push plate 22, and each of four corners of the front mold plate 21 is provided with a guide post 24, and correspondingly, the rear mold plate 31 has a guide sleeve slidably engaged with the guide post 24.

Referring to fig. 3 to 4, one end of a pull block 25 is fixedly mounted on the inner surface of the runner push plate 22, the other end of the pull block 25 is provided with an inclined surface 25b, and a T-shaped block 25a is provided on the inclined surface 25 b. The end of the oblique drawing block 26 far away from the first forming end 26b is provided with a T-shaped groove 26a, and the T-shaped groove 26a and the T-shaped block 25a are combined to form an oblique wedge structure. In the mold opening process, the first parting surface between the front mold plate 21 and the runner push plate 22 is opened, the front mold plate 21 is separated from the runner push plate 22, and the pull block 25 drives the oblique drawing block 26 to slide relative to the front mold plate 21 so as to perform an internal drawing action, so that the first forming end 26b on the oblique drawing block 26 is separated from contact with the joint surface 12 on the lower decorative plate 10.

Further, as shown in fig. 5 to 8, in this embodiment, the mold legs 32 are installed on both sides of the rear mold plate 31, and a second parting plane is formed between the rear mold plate 31 and the front mold plate 21. The rear die plate 31 is slidably mounted with a lateral slider 33, the lateral slider 33 having a slant guide hole 33a, and correspondingly, the front die plate 21 having a slant guide post 27 slidably fitted with the slant guide hole 33 a. The lateral slider 33 has a molding structure for molding one side of the joint face 12. Wherein the compression bar 34 is elastically installed on the lateral sliding block 33, and the compression bar 34 penetrates through the inner and outer ends of the lateral sliding block 33. The inner end of the pressing rod 34 has a second molding end 34a, the combination of the second molding end 34a and the molding structure of the lateral sliding block 33 is used for molding one side of the lap surface 12, the second molding end 34a is used for molding one side of the square through hole on the lap surface 12, and the second molding end 34a on the corresponding oblique drawing block 26 is used for molding the other side of the square through hole.

Specifically, a spring 35 is disposed between the compression bar 34 and the lateral sliding block 33, the spring 35 has an elastic tendency to move the compression bar 34 away from the oblique drawing block 26, and the spring 35 provides continuous elastic tension to automatically move the compression bar 34 away from the oblique drawing block 26, so that a smooth and efficient separation action is realized during demolding, and molding defects caused by friction or blocking are effectively avoided. The lateral sliding block 33 is provided with a mounting groove 33b, the spring 35 and the pressing rod 34 are both arranged in the mounting groove 33b, the second forming end 34a of the pressing rod 34 extends out of the mounting groove 33b, the mounting groove 33b is connected with a limiting block 36, and the free end 34c of the pressing rod 34 extends out of the limiting block 36. The pressing rod 34 is provided with a shoulder 34b, the spring 35 is sleeved on the pressing rod 34, one end of the spring 35 abuts against the shoulder 34b, and the other end abuts against the bottom of the mounting groove 33 b.

Further, as shown in connection with fig. 9 to 10, in the present embodiment, the middle portion of the pressing lever 34 has a round of shoulder 34b, and the shoulder 34b is formed by protruding radially outward from the outer peripheral surface of the pressing lever 34. The mounting groove 33b has an opening, and the stopper 36 detachably closes the opening, and a side of the shoulder 34b remote from the spring 35 abuts against the stopper 36. The free end 34c of the pressing rod 34 extends out of the limiting block 36 and protrudes out of the outer surface of the limiting block 36. The other end of the plunger 34 remote from the free end 34c is connected to a shaped block having a second shaped end 34a. The first shaped end 26b has a protrusion that mates with the square through hole and the second shaped end 34a has a recess that mates with the square through hole. When the die is assembled, the protrusions and the grooves are penetrated to form square through holes.

Specifically, as shown in fig. 2 and 16, the front mold plate 21 has a guide groove 28, the guide groove 28 is tightly abutted against the free end 34c of the pressing rod 34 during mold closing, the guide groove 28 is tightly contacted with the free end 34c of the pressing rod 34 during mold closing, the guide groove 28 includes a tight abutting section 28a and a releasing section 28b, the tight abutting section 28a is tightly abutted against the free end 34c during mold closing, and the releasing section 28b is a space for the pressing rod 34 to move away from the oblique drawing block 26 during mold opening.

Further, in the present embodiment, during the mold opening process, after the first parting surface is opened, the second parting surface is opened. The lateral slider 33 moves laterally under the action of the oblique guide post 27. Because the bottoms of the abutting section 28a and the loosening section 28b are inclined planes 25b, under the action of the spring 35, the compression bar 34 moves outwards relative to the lateral sliding block 33, and the free end 34c of the compression bar 34 slides along the abutting section 28a, so that the second forming end 34a is separated from the overlap surface 12 in advance, the forming quality is ensured, and the surface of the overlap surface 12 is prevented from being scratched. The free end 34c is then shifted from the abutment section 28a to the release section 28b, at which time the plunger 34 continues to move until it is completely free of the landing 12, avoiding mold damage or molding errors due to premature removal of the plunger 34 from the landing 12. By this design, the release process of the pressing rod 34 is divided into two stages, so that the release process is more stable, the impact on the molding structure is reduced, the appearance and functional characteristics of the product are ensured to be stable, and the production efficiency and the yield are improved.

Further, in the present embodiment, the inclination of the abutting section 28a is smaller than that of the releasing section 28b, so that the moving speed of the pressing rod 34 at the abutting section 28a is smaller than that of the releasing section 28b, which effectively controls the moving rhythm of the pressing rod 34, prevents excessive stress generated during demolding, and thus avoids damage to the faying surface 12 and surrounding structures. Because of the relatively low slope of the abutment section 28a, the plunger 34 moves relatively slowly, helping to maintain protection of the faying surface during initial demolding and ensuring its surface flatness and integrity. In the release section 28b, the greater inclination accelerates the removal of the plunger 34, helping to achieve rapid release, thereby reducing overall release time and improving production efficiency.

Specifically, as shown in fig. 11 to 13, the rear module 30 further includes an ejector cylinder 37 and a top plate 38, the ejector cylinder 37 is fixedly mounted on the rear mold plate 31, a piston rod end of the ejector cylinder 37 is fixedly connected with the top plate 38, and the first inclined ejector block 39 and the second inclined ejector block 310 are fixedly mounted on the top plate 38. The top plate 38 is fixedly provided with a first straight top 312 and a second straight top 313.

Further, the method comprises the steps of. In the present embodiment, the rear mold plate 31 is fitted with a rear mold insert 311, and the first inclined top block 39, the second inclined top block 310, the first straight top 312 and the second straight top 313 are all fitted on the rear mold plate 31 and fixedly connected to the top plate 38. Wherein the combination of the first angled roof block 39 and the rear mold insert 311 is used to form the support seat 11 on the lower trim panel 10. The second inclined ejector block 310 is used for forming the hooks 13 on the lower decorative board 10, and the first straight ejector 312 and the second straight ejector 313 are used for ejecting the finished product from the rear mold plate 31.

In this embodiment, the mold opening step of the mold is as follows:

first, the first parting surface is opened under the action of the runner push plate 22, so that the front template 21 is separated from the runner push plate 22, and the pull block 25 pushes the oblique drawing block 26 to complete internal drawing, so that the first forming end 26b is separated from contact with the lapping surface 12 of the lower plaque 10.

As the first parting plane opens, the second parting plane is separated by the pushing of the rear form 31. At this time, the oblique guide post 27 drives the lateral slider 33 to move laterally, and the free end 34c of the compression rod 34 slides along the abutting section 28a, so that the second forming end 34a is separated from the faying surface 12 in advance, and the faying surface 12 is prevented from being damaged by pulling.

The free end 34c of the plunger 34 is switched from the abutment section 28a to the release section 28b and the plunger 34 continues to move under the action of the spring 35 until it is completely clear of the landing surface 12, thereby avoiding die damage or molding errors due to premature disengagement.

Under the action of the ejection cylinder 37, the top plate 38 drives the first inclined ejection block 39, the second inclined ejection block 310, the first straight ejection block 312 and the second straight ejection block 313 to eject the supporting seat 11 and the clamping hook 13 on the finished product respectively, so that the finished product is ensured to be completely separated from the die.

The mold opening process is precisely designed, and stable demolding of a complex structure is realized through a plurality of sections and an ejection mechanism, so that the molding quality and the production efficiency of products are effectively improved.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, or indirectly connected through an intermediary, or in communication with each other, or in an interaction relationship between two elements, unless explicitly specified otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. An A-pillar lower trim injection mold, comprising a front mold assembly and a rear mold assembly, characterized in that:

The front mold assembly includes a front mold plate, a runner push plate, a pull block and an oblique pull block, wherein the pull block is fixedly mounted on the runner push plate, one end of the oblique pull block is obliquely slidably matched with the pull block, and the other end has a first molding end;

The rear mold assembly includes a rear mold plate, a lateral slider, a pressure rod, a first inclined lift block and a second inclined lift block. The lateral slider is slidably mounted on the rear mold plate, and the pressure rod is floatingly mounted on the lateral slider. One end of the pressure rod is a free end, and the other end has a second forming end. The combination of the first forming end and the second forming end is used to form the overlapping surface on the lower decorative panel, the first inclined lift block is used to form the support seat on the lower decorative panel, and the second inclined lift block is used to form the hook on the lower decorative panel.

2. An A-pillar lower trim injection mold according to claim 1, characterized in that a spring is provided between the pressure rod and the lateral slider, and the spring has an elastic tendency to move the pressure rod away from the oblique drawer block.

3. An A-pillar lower trim injection mold according to claim 2, characterized in that: the front template has a guide groove, and the guide groove is tightly against the free end of the pressure rod when the mold is closed.

4. An A-pillar lower trim injection mold according to claim 3, characterized in that: the guide groove includes a tightening section and a loosening section, the tightening section is tightly pressed against the free end when the mold is closed, and the loosening section makes room for the pressure rod to move away from the oblique drawer block when the mold is opened.

5. An A-pillar lower trim injection mold according to claim 4, characterized in that: the front template is fixedly mounted with an inclined guide column, and the lateral sliding block has an inclined guide hole that slidably cooperates with the inclined guide column.

6. An A-pillar lower trim injection mold according to claim 2, characterized in that: the lateral slider is provided with a mounting groove, the spring and the pressure rod are both arranged in the mounting groove, and the second molded end of the pressure rod extends out of the mounting groove, the mounting groove is connected to a limiting block, and the free end of the pressure rod extends out of the limiting block.

7. An A-pillar lower trim injection mold according to claim 6, characterized in that: the pressure rod is provided with a shoulder, the spring is sleeved on the pressure rod, and one end of the spring abuts against the shoulder, and the other end abuts against the bottom of the installation groove.

8. An A-pillar lower trim injection mold according to claim 1, characterized in that: the rear mold assembly also includes an ejector cylinder and a top plate, the ejector cylinder is fixedly installed on the rear mold plate, and the piston rod end of the ejector cylinder is fixedly connected to the top plate, and the first inclined ejector block and the second inclined ejector block are both fixedly installed on the top plate.

9 . The A-pillar lower trim injection mold according to claim 8 , wherein a first straight top block and a second straight top block are fixedly mounted on the top plate.

10. The A-pillar lower trim injection mold according to claim 1, wherein the pull block has an inclined surface and a T-shaped block located on the inclined surface, and the inclined pull block has a T-shaped groove that slidably cooperates with the T-shaped block.