A mold structure with staggered core pulling

Abstract

A mold structure with staggered core-pulling, comprising a movable mold and a fixed mold, the fixed mold being provided with a forming surface, a left mold wall and a right mold wall, and further comprising: a main core-pulling assembly comprising a main push rod and a core-pulling block, a mold cavity being formed between the lower side of the movable mold, the core-pulling block and the forming surface, the upper end of the main push rod being connected to the core-pulling block and the lower end being connected to a main driving member, the left end and the right end of the upper side of the core-pulling block being respectively provided with a left stay plate and a right stay plate; a left push rod and a right push rod, the left side of the upper end of the left push rod, the left side of the left stay plate and the left mold wall forming a mold cavity, the right side of the upper end of the right push rod, the right side of the right stay plate and the right mold wall forming a mold cavity; when demolding, the main push rod moves upward and rearward, the left push rod moves upward and rearward to the right, and the right push rod moves upward and rearward to the left, so that the left side of the upper end of the left push rod is separated from the left side of the part, the right side of the upper end of the right push rod is separated from the right side of the part, and the part can be taken out from the core-pulling block under smaller resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, in particular to a mold structure with staggered core-pulling. BACKGROUND

[0002] In the field of injection molding, the mold design and demolding process of long and thin-walled parts such as air conditioner supports, guide rails, and decorative strips have always faced special challenges. Such parts have the structural characteristics of length significantly larger than width and thin wall thickness, so core-pulling structure needs to be used for auxiliary demolding.

[0003] Specifically, the mold structure of such parts includes a core-pulling structure in addition to a movable mold and a fixed mold. The movable mold and the fixed mold are arranged opposite to each other, and the core-pulling structure is located between the movable mold and the fixed mold, and the three form a mold cavity. After the part is cooled and formed in the mold cavity, the movable mold is separated from the fixed mold, and at the same time the core-pulling is pushed up by the push rod, so that the part is separated from the fixed mold, and then the part is taken out from the core-pulling, and the finished product of the part is obtained.

[0004] Due to the need for molding, the left and right sides of the core-pulling have a large contact surface with the inner walls of the left and right sides of the part. However, during demolding, due to thermal expansion and contraction, the part will produce obvious shrinkage stress in the length direction, causing the inner walls of the left and right sides of the part to be tightly attached to the left and right sides of the core-pulling. At this time, due to the large contact surface between the left and right sides of the core-pulling and the inner walls of the left and right sides of the part, the tightness force generated is often large. When the part needs to be taken out from the core-pulling, there will be a large frictional resistance between the two ends of the part and the core-pulling, which can easily cause quality problems such as deformation, surface scratches, and even breakage of the part, seriously affecting production efficiency and part qualification rate. SUMMARY

[0005] The purpose of the present application is to solve the problem in the prior art that when the part needs to be taken out from the core-pulling, there will be a large frictional resistance between the two ends of the part and the core-pulling, which can easily cause quality problems such as deformation, surface scratches, and even breakage of the part, seriously affecting production efficiency and part qualification rate.

[0006] To solve the above problems, the present application provides a mold structure with staggered core-pulling, which includes a movable mold and a fixed mold arranged in an upper and lower manner, the fixed mold is provided with a molding surface extending in the left and right directions, and a left mold wall and a right mold wall located at the left and right sides of the molding surface, and further comprising:

[0007] The main core-pulling assembly comprises a main push rod and a core-pulling block, the forming surface is arranged in front of the core-pulling block, a mold cavity is formed between the lower side of the movable mold, the core-pulling block and the forming surface, the main push rod is vertically arranged and gradually inclined rearward from bottom to top, the upper end of the main push rod is connected to the core-pulling block, the main push rod is used to push the core-pulling block to move toward the rear upper side of the forming surface during demolding, the left end and the right end of the upper side of the core-pulling block are respectively provided with a left supporting piece and a right supporting piece, and the upper end faces of the left supporting piece and the right supporting piece are flush with the upper end face of the core-pulling block;

[0008] The left push rod and the right push rod are arranged on the left side and the right side of the main push rod, the left push rod is vertically arranged and gradually inclined to the right rear from bottom to top, the upper end of the left push rod is slidably abutted to the lower end face of the left supporting piece, and a mold cavity is formed between the left side of the upper end of the left push rod, the left side of the left supporting piece and the left mold wall; the right push rod is vertically arranged and gradually inclined to the left rear from bottom to top, the upper end of the right push rod is slidably abutted to the lower end face of the right supporting piece, and a mold cavity is formed between the right side of the upper end of the right push rod, the right side of the right supporting piece and the right mold wall; the inclination angle of the left push rod and the right push rod is greater than the inclination angle of the main push rod, the left side and the right side of the core-pulling block are respectively provided with guide inclines, the upper end of the left push rod moves toward the right rear relative to the left guide incline during demolding, and the upper end of the right push rod moves toward the left rear relative to the right guide incline.

[0009] Compared with the prior art, the above scheme optimizes the structure of the core-pulling block, the mold cavity formed between the lower side of the movable mold, the core-pulling block and the forming surface corresponds to the middle body part of the part, the mold cavity formed between the left side of the upper end of the left push rod, the left side of the left supporting piece and the left mold wall corresponds to the left end part of the part, the mold cavity formed between the right side of the upper end of the right push rod, the right side of the right supporting piece and the right mold wall corresponds to the right end part of the part; when demolding is needed, the movable mold first separates from the fixed mold, then the main push rod moves toward the rear upper side, at the same time, the left push rod moves toward the right rear upper side and the right push rod moves toward the left rear upper side, at this time, the part is driven by the core-pulling block to separate from the forming surface, and since the inclination angle of the left push rod and the right push rod is greater than the inclination angle of the main push rod, the upper end of the left push rod will move toward the right rear along the guide incline on the left side of the core-pulling block, and the upper end of the right push rod moves toward the left rear along the corresponding guide incline, so that the left side of the upper end of the left push rod separates from the left side of the part, and the right side of the upper end of the right push rod separates from the right side of the part, thereby when the part needs to be taken out from the core-pulling block, only the left end and the right end of the part will abut against the left side of the left supporting piece and the right side of the right supporting piece, greatly reducing the contact area, so that the part can be taken out from the core-pulling block under smaller resistance, not only saving labor, but also reducing the probability of part damage, and having good practicability.

[0010] In an improved scheme, the main push rod, the left push rod and the right push rod have the same rising speed, so that when the main push rod moves upward and backward, the left push rod and the right push rod can keep sliding contact with the left and right supporting pieces and support the left and right supporting pieces, so as to ensure that the left and right ends of the part can stably separate from the left and right mold walls.

[0011] In an improved scheme, the left end of the core-pulling block is provided with a left guide slope that gradually inclines to the right from front to back and gradually inclines to the right from bottom to top, and the right side of the upper end of the left push rod is slidingly connected to the left guide slope of the core-pulling block; the right end of the core-pulling block is provided with a right guide slope that gradually inclines to the left from front to back and gradually inclines to the left from bottom to top, and the left side of the upper end of the right push rod is slidingly connected to the right guide slope of the core-pulling block, so that the left guide slope better guides the upper end of the left push rod to move to the right and back, and the right guide slope better guides the upper end of the right push rod to move to the left and back.

[0012] In an improved scheme, the left side of the left push rod is flush with the left side of the left supporting piece, and the right side of the right push rod is flush with the right side of the right supporting piece, so as to ensure the flatness of the left and right ends of the part.

[0013] In an improved scheme, the main push rod is provided in plurality and arranged in intervals in the left-right direction, and the lower end of the core-pulling block is provided with buckles corresponding to the main push rods one by one, and the upper end of the main push rod is connected to the corresponding buckle one by one, so that the core-pulling block is more stably pushed by the plurality of main push rods due to the longer length of the core-pulling block in the left-right direction.

[0014] In an improved scheme, the upper part of the buckle is provided with a first clamping groove and the lower part is provided with a first protrusion, and the upper end of the main push rod is provided with a second protrusion clamped to the first clamping groove and a second clamping groove for clamping the first protrusion, so as to stably connect the core-pulling block and the main push rod and facilitate assembly.

[0015] In an improved scheme, the first clamping groove and the first protrusion of the leftmost buckle are arranged on the right side of the buckle, and the second protrusion and the second clamping groove of the main push rod corresponding to the buckle are arranged on the left side of the main push rod; the first clamping groove and the first protrusion of the rightmost buckle are arranged on the left side of the buckle, and the second protrusion and the second clamping groove of the main push rod corresponding to the buckle are arranged on the right side of the main push rod, so that the leftmost main push rod can offset the right pushing force applied by the left push rod to the left guide slope of the core-pulling block, and the rightmost main push rod can offset the left pushing force applied by the right push rod to the right guide slope of the core-pulling block, so as to ensure the force balance of the core-pulling block.

[0016] In an improved embodiment, the first boss is provided with a fastening bolt for insertion into the second slot, and the second boss is provided with a fastening bolt for insertion into the first slot, thereby improving the connection stability between the first boss and the second slot, and between the second boss and the first slot through the fastening bolts. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an overall mold structure with staggered core pulling;

[0018] Figure 2 This is a schematic diagram of a mold structure with staggered core pulling, after the moving mold has been removed.

[0019] Figure 3 In order to be in Figure 2 A schematic diagram with the mold set hidden;

[0020] Figure 4 In order to be in Figure 3 A schematic diagram with parts hidden from the original design;

[0021] Figure 5 A schematic diagram of a core-pulling block with a staggered core-pulling mold structure;

[0022] Figure 6 This is a schematic diagram showing the positions of the core-pulling block, main push rod, left push rod, and right push rod in a mold structure with staggered core-pulling.

[0023] Figure 7 This is a top view schematic diagram of a mold structure with staggered core pulling;

[0024] Figure 8 For along Figure 7 Cross-sectional view of section AA in the middle;

[0025] Figure 9 For along Figure 7 sectional view of the BB section line;

[0026] Figure 10 for Figure 6 A magnified view of a portion of region C.

[0027] Explanation of reference numerals in the attached figures.

[0028] 1. Fixed mold; 11. Molding surface; 12. Left mold wall; 13. Right mold wall; 2. Moving mold; 3. Main ejector pin; 31. Second boss; 32. Second slot; 4. Core-pulling block; 41. Left support piece; 42. Right support piece; 43. Guide slope; 44. Buckle; 441. First slot; 442. First boss; 5. Left ejector pin; 6. Right ejector pin; 7. Part. Detailed Implementation

[0029] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions.

[0030] In the description of the following embodiments, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0033] Please refer to Figures 1-10 The embodiments of the present application provide a mold structure with staggered core-pulling, which comprises a movable mold 2 and a fixed mold 1 arranged upward and downward, the fixed mold 1 is provided with a forming surface 11 extending along the left-right direction, and a left mold wall 12 and a right mold wall 13 located at the left side and the right side of the forming surface 11, and further comprising:

[0034] A main core-pulling assembly comprises a main push rod 3 and a core-pulling block 4, the forming surface 11 and the core-pulling block 4 are arranged front and back, and a mold cavity is formed between the lower side of the movable mold 2, the core-pulling block 4 and the forming surface 11, the main push rod 3 is vertically arranged and gradually inclined upward and rearward from bottom to top, the upper end of the main push rod 3 is connected to the core-pulling block 4, and the main push rod 3 is used to push the core-pulling block 4 to move upward and rearward of the forming surface 11 during demolding, the left end and the right end of the upper side of the core-pulling block 4 are respectively provided with a left supporting piece 41 and a right supporting piece 42, and the upper end faces of the left supporting piece 41 and the right supporting piece 42 are flush with the upper end face of the core-pulling block 4;

[0035] The left push rod 5 and the right push rod 6 are located at the left side and the right side of the main push rod 3, the left push rod 5 is vertically arranged and gradually inclines to the right rear from bottom to top, the upper end of the left push rod 5 is in sliding abutment with the lower end surface of the left support sheet 41, and the left side of the upper end of the left push rod 5, the left side of the left support sheet 41 and the left mold wall 12 form a mold cavity; the right push rod 6 is vertically arranged and gradually inclines to the left rear from bottom to top, the upper end of the right push rod 6 is in sliding abutment with the lower end surface of the right support sheet 42, and the right side of the upper end of the right push rod 6, the right side of the right support sheet 42 and the right mold wall 13 form a mold cavity; the angle of inclination of the left push rod 5 and the right push rod 6 to the rear is greater than the angle of inclination of the main push rod 3 to the rear, the left side and the right side of the core pulling block 4 are respectively provided with guide inclined surfaces 43, the upper end of the left push rod 5 moves to the right rear relative to the left guide inclined surface 43 during demolding, and the upper end of the right push rod 6 moves to the left rear relative to the right guide inclined surface 43 during demolding.

[0036] In combination with Figure 2 as shown in the drawings, Figure 2 the front part and the rear part of the fixed mold 1 respectively have a part 7, that is, the front part and the rear part of the fixed mold 1 respectively have a forming surface 11. The embodiment is described with respect to the forming surface 11 located at the front part of the fixed mold 1.

[0037] In combination with Figure 3 , Figure 8 and Figure 10 as shown in the drawings, the part 7 is long and thin in the left-right direction and has a thin-walled structure, the left end and the right end of the part 7 respectively have a plate-shaped structure in the vertical direction, the outer side of the left end and the right end of the part 7 respectively corresponds to the left mold wall 12 and the right mold wall 13, the inner side of the left end of the part 7 corresponds to the left side of the left support sheet 41 and the left side of the upper end of the left push rod 5, the inner side of the right end of the part 7 corresponds to the right side of the right support sheet 42 and the right side of the right push rod 6, the front side of the part 7 corresponds to the forming surface 11, the rear side of the part 7 corresponds to the front side of the core pulling block 4, the upper side of the part 7 corresponds to the movable mold 2, and the lower side of the part 7 corresponds to the fixed mold 1.

[0038] Compared with the prior art, the above scheme optimizes the structure of the core-pulling block 4, wherein the cavity formed between the lower side of the movable die 2, the core-pulling block 4 and the forming surface 11 corresponds to the middle body part of the part 7; the cavity formed between the left side of the upper end of the left push rod 5, the left side of the left supporting piece 41 and the left die wall 12 corresponds to the left end part of the part 7; the cavity formed between the right side of the upper end of the right push rod 6, the right side of the right supporting piece 42 and the right die wall 13 corresponds to the right end part of the part 7; when demolding is needed, the movable die 2 first separates from the fixed die 1, and then the main push rod 3 moves upward and rearward, at the same time, the left push rod 5 moves upward and rearward to the right, and the right push rod 6 moves upward and rearward to the left, at this time, the part 7 is driven by the core-pulling block 4 to separate from the forming surface 11, and since the angle of inclination of the left push rod 5 and the right push rod 6 to the rear is greater than the angle of inclination of the main push rod 3 to the rear, the upper end of the left push rod 5 will move along the left guide slope 43 of the core-pulling block 4 to the right and rear, and the upper end of the right push rod 6 will move along the corresponding guide slope 43 to the left and rear, so that the left side of the upper end of the left push rod 5 separates from the left side of the part 7, and the right side of the upper end of the right push rod 6 separates from the right side of the part 7, thereby when the part 7 is taken out of the core-pulling block 4, only the left end and the right end of the part 7 will abut against the left side of the left supporting piece 41 and the right side of the right supporting piece 42, greatly reducing the contact area, so that the part 7 can be taken out of the core-pulling block 4 under smaller resistance, not only saving labor, but also reducing the probability of damage to the part 7, and having good practicability.

[0039] The main push rod 3, the left push rod 5 and the right push rod 6 are all driven by corresponding hydraulic cylinders to realize linear reciprocating motion along the respective axial directions, which belongs to the prior art and will not be described here. In the embodiment, the main push rod 3, the left push rod 5 and the right push rod 6 are designed to have the same rising speed, that is, the displacement of the main push rod 3, the left push rod 5 and the right push rod 6 in the vertical direction is kept in a synchronous state, so that when the main push rod 3 moves upward and rearward, since the rising speed of the left push rod 5 and the right push rod 6 is the same as that of the main push rod 3, the left push rod 5 and the right push rod 6 can keep in sliding abutment with the left supporting piece 41 and the right supporting piece 42, thereby playing a supporting role on the left supporting piece 41 and the right supporting piece 42, and ensuring that the left end and the right end of the part 7 can stably separate from the left die wall 12 and the right die wall 13.

[0040] It should be noted that the left supporting piece 41 and the right supporting piece 42 are both in the form of a sheet and are located at the left end and the right end of the upper side of the core-pulling block 4, and the left supporting piece 41 and the right supporting piece 42 are both rigid structures, while the two guide slopes 43 of the core-pulling block 4 are respectively below the left supporting piece 41 and the right supporting piece 42.

[0041] As Figure 5 and Figure 10As shown, regarding the guide slopes 43 at the left and right ends of the core-pulling block 4, specifically, the guide slope 43 at the left end of the core-pulling block 4 gradually tilts to the right from front to back and gradually tilts to the right from bottom to top, with the right side of the upper end of the left push rod 5 sliding against the guide slope 43 at the left end of the core-pulling block 4; the guide slope 43 at the right end of the core-pulling block 4 gradually tilts to the left from front to back and gradually tilts to the left from bottom to top, with the left side of the upper end of the right push rod 6 sliding against the guide slope 43 at the right end of the core-pulling block 4, thereby allowing the guide slope 43 on the left to better guide the upper end of the left push rod 5 to move to the right rear, and the guide slope 43 on the right to better guide the upper end of the right push rod 6 to move to the left rear.

[0042] like Figure 10 As shown, in this embodiment, the left side of the left push rod 5 is flush with the left side of the left support plate 41. Similarly, the right side of the right push rod 6 is flush with the right side of the right support plate 42. This structure ensures the flatness of the left and right ends of part 7. It should be understood that the left side of the left push rod 5 can also be offset relative to the left side of the left support plate 41, and the left side of the right push rod 6 can also be offset relative to the right side of the right support plate 42, depending on the shape of the left and right ends of part 7. This design does not limit this.

[0043] like Figure 6 As shown, considering that the length of the core-pulling block 4 in the left and right direction is relatively long, as an improvement to this embodiment, the main push rods 3 are designed to be multiple and arranged at intervals in the left and right direction. The lower end of the core-pulling block 4 is provided with a buckle 44 corresponding to each of the main push rods 3. The upper end of each of the main push rods 3 is connected to the corresponding buckle 44. By setting multiple main push rods 3, a more stable pushing effect on the core-pulling block 4 can be achieved.

[0044] More specifically, such as Figure 3 As shown, the upper part of the buckle 44 is provided with a first slot 441 and the lower part is provided with a first boss 442. The upper end of the main push rod 3 is provided with a second boss 31 that is engaged with the first slot 441 and a second slot 32 for the first boss 442 to engage, thereby realizing a stable connection between the core-pulling block 4 and the main push rod 3, and making assembly convenient.

[0045] Further, the first slot 441 and the first boss 442 of the leftmost buckle 44 are arranged on the right side of the buckle 44, and the second boss 31 and the second slot 32 of the main push rod 3 corresponding to the buckle 44 are arranged on the left side of the main push rod 3; the first slot 441 and the first boss 442 of the rightmost buckle 44 are arranged on the left side of the buckle 44, and the second boss 31 and the second slot 32 of the main push rod 3 corresponding to the buckle 44 are arranged on the right side of the main push rod 3. After adopting the above structure, the leftmost main push rod 3 can offset the right pushing force applied by the left push rod 5 to the left guide slope 43 of the core-pulling block 4, and the rightmost main push rod 3 can offset the left pushing force applied by the right push rod 6 to the right guide slope 43 of the core-pulling block 4, thereby ensuring the force balance of the core-pulling block 4.

[0046] In addition, a fastening bolt for being inserted into the second slot 32 can be arranged on the first boss 442, and a fastening bolt for being inserted into the first slot 441 can be arranged on the second boss 31, so as to further improve the connection stability between the first boss 442 and the second slot 32 and between the second boss 31 and the first slot 441 through the fastening bolts.

[0047] It should be noted that, in the description of the present application, the terms indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0048] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0049] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily conceived by the person skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A mold structure with staggered core-pulling, comprising an upper and lower movable mold and a fixed mold, the fixed mold being provided with a molding surface extending in a left-right direction, and a left mold wall and a right mold wall located at the left and right sides of the molding surface, characterized by, Also comprising: a main core-pulling assembly including a main push rod and a core-pulling block, the forming surface and the core-pulling block being arranged in front and back, and a mold cavity being formed between the lower side of the movable mold, the core-pulling block and the forming surface, the main push rod being vertically arranged and gradually inclined backward from bottom to top, the upper end of the main push rod being connected to the core-pulling block, the main push rod being used to push the core-pulling block to move toward the upper rear of the forming surface during demolding, the left end and the right end of the upper side of the core-pulling block being respectively provided with a left support piece and a right support piece, and the upper end faces of the left support piece and the right support piece being flush with the upper end face of the core-pulling block; a left push rod and a right push rod located at the left side and the right side of the main push rod, the left push rod being vertically arranged and gradually inclined to the right rear from bottom to top, the upper end of the left push rod being slidably abutted to the lower end face of the left support piece, and a mold cavity being formed between the left side of the upper end of the left push rod, the left side of the left support piece and the left mold wall; the right push rod being vertically arranged and gradually inclined to the left rear from bottom to top, the upper end of the right push rod being slidably abutted to the lower end face of the right support piece, and a mold cavity being formed between the right side of the upper end of the right push rod, the right side of the right support piece and the right mold wall; the angle of inclination of the left push rod and the right push rod being greater than the angle of inclination of the main push rod, the left side and the right side of the core-pulling block being respectively provided with a guide slope, the upper end of the left push rod moving to the right rear relative to the left side guide slope during demolding, and the upper end of the right push rod moving to the left rear relative to the right side guide slope during demolding.

2. The mold structure with misaligned cores according to claim 1, wherein, The main push rod, the left push rod and the right push rod have the same rising speed.

3. The mold structure with misaligned cores according to claim 1 or 2, characterized in that, The guide slope of the left end of the core-pulling block is gradually inclined to the right from front to back and gradually inclined to the right from bottom to top, and the right side of the upper end of the left push rod is slidably abutted to the guide slope of the left end of the core-pulling block; the guide slope of the right end of the core-pulling block is gradually inclined to the left from front to back and gradually inclined to the left from bottom to top, and the left side of the upper end of the right push rod is slidably abutted to the guide slope of the right end of the core-pulling block.

4. The mold structure with misaligned cores according to claim 1 or 2, characterized in that, The left side of the left push rod is flush with the left side of the left support piece, and the right side of the right push rod is flush with the right side of the right support piece.

5. The mold structure with misaligned cores according to claim 1 or 2, wherein The main push rod is a plurality of and is arranged in intervals along the left-right direction, the lower end of the core-pulling block is provided with buckles corresponding to the main push rods one by one, and the upper end of the main push rod is connected to the corresponding buckle one by one.

6. The mold structure with misaligned cores according to claim 5, wherein, The upper part of the buckle is provided with a first clamping groove and the lower part is provided with a first protrusion, and the upper end of the main push rod is provided with a second protrusion clamped to the first clamping groove and a second clamping groove for clamping the first protrusion.

7. The mold structure with misaligned cores according to claim 6, wherein The first clamping groove and the first protrusion of the leftmost buckle are arranged on the right side of the buckle, and the second protrusion and the second clamping groove of the main push rod corresponding to the buckle are arranged on the left side of the main push rod; the first clamping groove and the first protrusion of the rightmost buckle are arranged on the left side of the buckle, and the second protrusion and the second clamping groove of the main push rod corresponding to the buckle are arranged on the right side of the main push rod.

8. A mold structure with misaligned cores according to claim 6 or 7, characterized in that, The first protrusion is provided with a fastening bolt for inserting into the second clamping groove, and the second protrusion is provided with a fastening bolt for inserting into the first clamping groove.

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