CN218803419U - Demoulding structure of automobile seat framework - Google Patents

Abstract

The application discloses a demoulding structure of an automobile seat framework, which comprises an upper mould, a lower mould and a pair of second cores; the second cores are correspondingly arranged on the upper die through a second demoulding mechanism; the second core is suitable for being matched with the head part and the lower die to form the mounting part of the seat framework; when the upper die moves upwards and opens the die, the second core is suitable for sequentially performing a first process, a second process and a third process. The beneficial effect of this application: when the mounting part is demoulded, a driving source does not need to be additionally arranged, and the second mold core can be demoulded only through the mold opening process of the upper mold; compared with the traditional multi-drive multi-direction demoulding mode, the demoulding process is simple and efficient, and meanwhile, the design cost of the mould can be reduced. Through dividing into a plurality of parts with the second refill and carrying out the substep drawing of patterns through second demoulding mechanism at the in-process of die sinking, compare traditional direct compulsory drawing of patterns, can effectual improvement product drawing of patterns quality.

Description

Demoulding structure of automobile seat framework

Technical Field

The application relates to the field of automobile part production, in particular to a demoulding structure of an automobile seat framework.

Background

The seat of the automobile is mainly supported by the seat frame, and is installed by the seat frame when being installed.

As shown in fig. 1 and 2, a seat frame 100 of a conventional automobile is schematically shown. Both ends of the seat frame 100 are provided with mounting portions 110 that are recessed toward the inside of the seat frame 100, and both sides of the mounting portions 110 in the opening direction are provided with a plurality of protruding structures having a small extension dimension.

In the conventional molding die, when the mounting portion 110 is removed from the die, at least two driving sources are provided at corresponding positions of the mounting portion 110, and the die is forcibly removed from the die in order from a plurality of directions. Therefore, when the seat frame 100 is forcibly demolded, the protruding structures on the two sides of the mounting portion 110 are easily worn, and the existing demolding process is complicated, so that the production efficiency and the product quality of the seat frame 100 are affected.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a forming die who conveniently carries out the drawing of patterns under the circumstances of guaranteeing car seat skeleton shaping quality.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a demoulding structure of an automobile seat framework comprises an upper die, a lower die and a pair of second cores; the first mold core is arranged on the lower mold; the second cores are correspondingly arranged on the upper die through a second demolding mechanism; the lower die and the head of the second mold core are matched with each other to form a mounting part of a seat framework; when the upper die moves upwards and opens the die, the second core is suitable for sequentially performing a first process, a second process and a third process; wherein the first process: the upper part of the second mold core slides towards the opening direction of the mounting part until the second mold core is separated; a second process: the upper part of the second mold core moves upwards synchronously with the upper mold to drive two sides of the lower part of the second mold core to contract; a third process: and the second core integrally slides towards the opening direction of the mounting part continuously until the lower part of the second core is separated from the mounting part.

Preferably, the second core comprises a first forming block, a second forming block and a pair of third forming blocks; the head part of the first molding block is used for molding a part mounting part, and the first molding block is suitable for being connected with the second demolding mechanism; the head of the second molding block is used for molding a part of the installation part, and the second molding block is positioned at the lower part of the second core and matched with the first molding block through a connecting structure; the third forming blocks are used for forming a protruding structure on the side edge of the mounting part, are respectively positioned on two sides of the second forming block and are matched with the second forming block through a driving structure; when a first process is carried out, the first molding block is adapted to slide relative to the second molding block under the drive of the second demolding mechanism; when the second process is performed, the second forming blocks are adapted to move up synchronously with the first forming blocks through the connecting structure, so that the third forming blocks perform opposite movement through the driving structure.

Preferably, the connecting structure comprises a connecting groove and a connecting block which are in sliding fit; the connecting groove and the connecting block are respectively arranged on the first forming block and the second forming block, and the extending direction of the connecting groove is parallel to the opening direction of the mounting part; when a first process is carried out, the connecting block is suitable for relatively sliding along the connecting groove, so that the second forming block keeps still, and the first forming block moves along the opening direction of the mounting part until the head part of the first forming block is separated from the mounting part; when the second process is carried out, the connecting block is suitable for being abutted against the connecting groove, so that the second forming block moves upwards vertically along with the first forming block.

Preferably, the vertical section of the second forming block is in an inverted frustum shape, and the adjacent side surfaces of the third forming block and the second forming block are parallel to each other; the driving structure comprises a driving groove and a driving block which are in sliding fit; the driving groove and the driving block are respectively arranged on the second forming block and the third forming block; when the second process is carried out, the second forming block moves upwards vertically along with the first forming block, so that the third forming block is driven to move horizontally towards the second forming block through the relative sliding of the driving block along the driving groove until the third forming block is separated from the formed convex structure.

Preferably, the third forming block is further matched with the first forming block through a limiting structure, so that in the second process, the third forming block is kept static relative to the vertical direction. So that wear of the third forming block on the projection arrangement can be reduced or avoided.

Preferably, the limiting structure comprises a spring; the spring is arranged on the third forming block, so that the upper end of the spring is abutted against the first forming block; or the spring is arranged on the first forming block, so that the lower end of the spring is abutted against the third forming block; the spring is always in a compressed state, so that in the second process, the third forming block is kept vertically still under the elastic force of the spring.

Preferably, the second demoulding mechanism comprises a second top plate and a third ejector rod; the second top plate is vertically and slidably installed on the upper die, a second sliding groove is formed in the second top plate, and the extending direction of the second sliding groove is parallel to the opening direction of the installation part; the third ejector rod is obliquely and slidably arranged on the upper die, the upper part of the third ejector rod is slidably connected with the second sliding chute, and the lower end of the third ejector rod is connected with the corresponding first forming block; when the first process is carried out, the first forming block is abutted against the mounting part in the vertical direction, so that the second top plate is kept static, and the upper die is suitable for driving the third ejector rod to slide along the second sliding groove until the first forming block is separated from the mounting part; when the second process is carried out, the first forming block drives the second forming block to synchronously and vertically move upwards through the connecting structure until the second forming block abuts against the mounting part; when the third process is carried out, the second forming block is abutted against the mounting portion in the vertical direction, so that the second top plate is kept still again, and the upper die is suitable for driving the third ejector rod to continue to slide along the second sliding groove until the second forming block and the third forming block are separated from the mounting portion.

Preferably, the second sliding chute is internally provided with a sliding block in a sliding way; the upper end of the third ejector rod is fixedly connected with the sliding block; the second demolding mechanism further comprises a guide rod; the guide rod and the third ejector rod are arranged in parallel; both ends of the guide rod are fixedly connected with the upper die, and the guide rod is in sliding fit with the sliding block along the axial direction; when the mould is opened, the third ejector rod is suitable for sliding along the guide rod through the sliding block, and therefore the structural rigidity of the third ejector rod can be improved.

Preferably, the lower die is further provided with a first core and a first demoulding mechanism, and the first core is suitable for being matched with the head part of the second core for forming a mounting part; the first demolding mechanism is connected with the first mold core and the molded seat framework; when the upper die is opened, the first demolding mechanism is suitable for vertically jacking the formed seat framework, and in the process that the seat framework vertically moves upwards to be separated from the lower die, the first demolding mechanism is further suitable for driving the first core to move towards the direction opposite to the opening of the mounting part until the first core is separated from the mounting part.

Preferably, the first ejector mechanism includes a pair of driving devices, a first top plate, and a second ejector rod group. The two driving devices are fixedly arranged on the lower die, one driving device is vertically arranged and is connected with the first top plate through an output end, and the other driving device is horizontally arranged and is connected with the first core through an output end; the first top plate is vertically matched with the lower die in a sliding mode, the second ejector rod group is fixedly installed on the first top plate and is vertically arranged, and the upper end of the second ejector rod group is suitable for being connected with a formed seat framework; after the mold opening is completed, one of the driving devices is suitable for driving the first mold core to move away from the mounting part until the first mold core is separated from the mounting part; and the other driving device drives the first top plate to drive the second top rod group to vertically jack the formed seat framework to be separated from the lower die.

Compared with the prior art, the beneficial effect of this application lies in:

(1) When the mounting part is demoulded, a driving source is not required to be additionally arranged, and the second core can be demoulded only through the mould opening process of the upper mould; compared with the traditional multi-drive multi-direction demoulding mode, the demoulding process is simple and efficient, and meanwhile, the design cost of the mould can be reduced.

(2) Through dividing into a plurality of parts with the second refill and carrying out the substep drawing of patterns through second demoulding mechanism at the in-process of die sinking, compare traditional direct compulsory drawing of patterns, can effectual improvement product drawing of patterns quality.

Drawings

Fig. 1 is a front structural schematic diagram of a seat frame in the prior art.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of the overall structure of the present invention.

Fig. 4 is a schematic sectional view of the present invention.

Fig. 5 is a schematic structural view of a second core according to the present invention.

Fig. 6 is a schematic view showing an exploded state of the second core according to the present invention.

Fig. 7 is a schematic structural diagram of the first molding block of the present invention.

Fig. 8 is a schematic structural diagram of the second forming block of the present invention.

Fig. 9 is a schematic structural view of a third forming block of the present invention.

Fig. 10 is a schematic diagram of the state of the second core performing the first process when the middle upper mold is opened.

Fig. 11 is a first schematic diagram illustrating a state where the second core performs the second process when the middle upper die of the present invention is opened.

Fig. 12 is a second schematic diagram illustrating a state that the second core performs the second process when the middle upper mold of the present invention is opened.

Fig. 13 is a schematic diagram of the state of the second core performing the third process when the middle upper die of the present invention is opened.

Fig. 14 is a schematic view of the state of the demolding mechanism driving the first core to perform demolding.

In the figure: the seat frame comprises a seat frame 100, a mounting portion 110, an upper die 200, an upper molding module 210, a lower die 300, a lower molding module 310, a first demolding mechanism 4, a driving device 41, a first top plate 42, a first sliding groove 420, a first ejector rod 43, a second ejector rod group 44, a first mold core 500, a second mold core 6, a first molding block 61, a connecting groove 610, a second molding block 62, a driving groove 620, a connecting block 621, a first mounting groove 622, a third molding block 63, a driving block 630, a second mounting groove 631, a spring 700, a second demolding mechanism 8, a second top plate 81, a second sliding groove 810, a third ejector rod 82 and a guide rod 83.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In one preferred embodiment of the present application, as shown in fig. 3 to 14, a mold release structure for a vehicle seat frame includes an upper mold 200, a lower mold 300, a first core 500, and a pair of second cores 6. The first cores 500 are mounted on the lower mold 300, and the second cores 6 are correspondingly mounted on the upper mold 200 by the second demolding mechanism 8. When the upper mold 200 and the lower mold 300 are mutually covered, a molding cavity for molding the seat frame 100 can be formed between the upper mold 200 and the lower mold 300; wherein the first core 500 may be fitted with a head portion of the second core 6 to mold the mounting portion 110 of the seat frame 100, and both sides of the second core 6 and the first core 500 are fitted with each other to mold the protruding structures of both sides of the mounting portion 110.

After the seat frame 100 is molded, the mold opening may be performed by moving the upper mold 200 upward. In the process of opening the upper mold 200, the second core 6 may be separated from the molded mounting part 110 by sequentially performing the first process, the second process, and the third process. Wherein the first process: the upper part of the second core 6 slides to the opening direction of the mounting part 110 until being separated; the second process: then, the upper part of the second core 6 moves upwards synchronously with the upper die 200 to drive the two sides of the lower part of the second core 6 to contract, so that the second core 6 is separated from the protruding structures on the two sides of the mounting part 110; the third process: the entire second core 6 continues to slide in the opening direction of the mounting portion 110 until the lower portion of the second core 6 is separated from the mounting portion 110, thereby completing the separation of the entire second core 6 from the mounting portion 110. Compared with the traditional multi-drive multi-direction demoulding mode, the multi-drive multi-direction demoulding mode does not need to additionally set a drive source, and the demoulding of the second core 6 can be realized only through the mould opening process of the upper mould 200, so that the design cost of the mould can be reduced, and meanwhile, the demoulding efficiency of the mould can be improved to improve the production efficiency of the seat framework 100. Simultaneously, this application carries out the substep drawing of patterns through second demoulding mechanism 8 at the in-process of die sinking through dividing into a plurality of parts with second refill 6, compares traditional direct compulsory drawing of patterns, can effectual improvement product drawing of patterns quality.

In this embodiment, as shown in fig. 4, the upper mold 200 includes an upper molding block 210, and the lower mold 300 includes a lower molding block 310. The upper molding block 210 is located at the lower end of the upper mold 200, and the lower molding block 310 is located at the upper end of the lower mold 300; the first core 500 is mounted to the lower molding block 310 and the second core 6 is mounted to the upper molding block 210. When the upper mold 200 and the lower mold 300 are closed, the upper molding block 210, the lower molding block 310, the first core 500, and the second core 6 may cooperate with each other to form a molding cavity for molding the seat frame 100.

In one embodiment of the present application, as shown in fig. 5 to 13, the second core 6 includes a first molding block 61, a second molding block 62, and a pair of third molding blocks 63. The head parts of the first forming block 61, the second forming block 62 and the third forming block 63 can be used for forming part of the structure of the mounting part 110, so that when the first forming block 61, the second forming block 62 and the third forming block 63 are matched for forming, the complete mounting part 110 can be formed; and the third molding blocks 63 may also mold the convex structures of both sides of the mounting part 110.

The first molding block 61 may be connected to the second mold-releasing mechanism 8; the second forming block 62 is positioned at the lower part of the second core 6 and is matched with the first forming block 61 through a connecting structure; two third forming blocks 63 are respectively positioned at both sides of the second forming block 62 and are engaged with the second forming block 62 through a driving structure. When the first process is performed, the upper die 200 is moved upward vertically, so that the first molding block 61 is driven to slide relative to the second molding block 62 in the opening direction of the mounting portion 110 by the second demolding mechanism 8 until the head portion of the first molding block 61 is disengaged from the mounting portion 110. When the second process is performed, the upper mold 200 continues to move up vertically, so that the second molding block 62 can move up synchronously with the first molding block 61 through the connecting structure, so that the third molding blocks 63 move toward each other through the driving structure until the third molding blocks 63 are disengaged from the protruding structures at both sides of the mounting portion 110. When the third process is performed, the upper die 200 continues to move vertically upward, so that the second molding block 62 together with the third molding block 63 can slide in the opening direction of the mount 110 with respect to the lower die 300 until the heads of the second molding block 62 and the third molding block 63 are separated from the mount 110, and finally, the process of separating the second core 6 from the mount 110 is performed.

In this embodiment, as shown in fig. 6 to 9, the connection structure includes a connection groove 610 and a connection block 621 which are slidably fitted. There are two arrangements for the connection groove 610 and the connection block 621.

The setting mode is as follows: arranging the connecting groove 610 on the end surface of the first forming block 61 close to the second forming block 62; the connecting block 621 is provided on the end surface of the second molding block 62 adjacent to the first molding block 61.

The setting mode II comprises the following steps: arranging the connecting groove 610 on the end surface of the second forming block 62 close to the first forming block 61; the connecting block 621 is provided on an end surface of the first molding block 61 adjacent to the second molding block 62.

It can be understood that, since the width dimension of the first molding block 61 is larger than that of the second molding block 62, the processing of the connecting groove 610 is facilitated, and therefore, the first arrangement manner is preferably adopted for the arrangement manner of the connecting structure in the embodiment.

Specifically, as shown in fig. 6 to 8 and 10 to 13, the extending direction of the connection groove 610 is parallel to the opening direction of the mounting portion 110. When the first process is performed, the connecting block 621 and the connecting groove 610 can slide relatively, so that the second molding block 62 remains stationary, and the first molding block 61 is driven by the second demolding mechanism 8 to move in the opening direction of the mounting portion 110 until the head portion of the first molding block 61 is separated from the mounting portion 110. When the second process is performed, since the first molding block 61 has been detached from the mounting portion 110, the first molding block 61 can be moved up vertically in synchronization with the upper die 200 by the second ejector mechanism 8; and during the process that the first forming block 61 moves vertically upwards, the second forming block 62 can move vertically upwards synchronously with the first forming block 61 through the abutting fit of the connecting block 621 and the connecting groove 610.

It is understood that the demolding process of the first molding block 61 is a result of the second demolding mechanism 8 and the mounting portion 110 simultaneously fitting the first molding block 61. Therefore, after the first molding block 61 is detached from the mounting portion 110, the first molding block 61 is moved up vertically in synchronization with the upper mold 200 in the second process.

In this embodiment, as shown in fig. 8, 9, 11, and 12, the vertical section of the second forming block 62 is in the shape of an inverted frustum, and the adjacent side surfaces of the third forming block 63 and the second forming block 62 are parallel to each other. The drive structure includes a drive slot 620 and a drive block 630 in sliding engagement; the driving groove 620 and the driving block 630 are provided to the second and third molding blocks 62 and 63, respectively. When the second process is performed, the second molding block 62 moves vertically upward along with the first molding block 61, so that the third molding block 63 is driven to perform a horizontal movement toward the second molding block 62 by the relative sliding of the driving block 630 along the driving groove 620 until the third molding block 63 is disengaged from the molded protrusion structure.

It will be appreciated that the vertical cross-section of the second forming block 62 is in the direction shown in figure 12. This application is for improving the shaping quality of product, when the drawing of patterns is carried out to second refill 6, through will be used for the third forming block 63 of the protruding structure of shaping installation department 110 both sides to carry out the horizontal migration of protruding structure dorsad to guarantee that third forming block 63 can not produce with protruding structure and interfere when carrying out the third process. The third forming block 63 needs to have enough moving clearance before performing horizontal movement; therefore, in order to ensure smooth horizontal movement of the third molding block 63, the second molding block 62 may be provided in an inverted frustum shape, so that a movable gap may be generated between the third molding block 63 and the horizontal direction during the upward movement of the second molding block 62 for the horizontal movement of the third molding block 63. Furthermore, in order to ensure that the second forming block 62 can move upwards smoothly, the first forming block 61 can be separated from the mounting portion 110, so as to ensure that a movable gap can be generated between the second forming block 62 and the mounting portion 110 in the vertical direction.

When the second process is performed, the driving force generated between the driving groove 620 and the driving block 630 due to the cooperation may be decomposed into a vertical component force and a horizontal component force; the horizontal component of the force can be used to drive the third forming block 63 to move horizontally, and the vertical component of the force is basically offset by the cooperation of the third forming block 63 and the formed convex structure; therefore, the third forming block 63 still causes some damage to the protrusion structure.

In order to further reduce or avoid damage of the third forming block 63 to the protruding structure, in one embodiment of the present application, the third forming block 63 is engaged by a limiting structure, so that in the second process, the third forming block 63 is kept stationary relative to the vertical direction, thereby reducing or avoiding wear of the protruding structure by the third forming block 63.

In this embodiment, there are various specific structures of the position limiting structure, including but not limited to the following two.

The structure I is as follows: as shown in fig. 12, the limiting structure comprises a spring 700; the spring 700 is mounted on the third forming block 63 so that the upper end of the spring 700 abuts against the first forming block 61; alternatively, the spring 700 is mounted to the first molding block 61 such that the lower end of the spring 700 abuts against the third molding block 63. The spring 700 is always in a compressed state, so that in the second process, the third forming block 63 is kept stationary in the vertical direction by the elastic force of the spring 700, and the third forming block 63 is horizontally moved by the driving structure.

The structure II is as follows: the limiting structure comprises a horizontal limiting block arranged on the lower molding module 310 and a limiting groove arranged on the third molding block 63. Therefore, when the second process is carried out, the vertical component force of the driving structure can be offset through the matching of the limiting groove and the limiting block.

It can be understood that both the above-mentioned structures can meet the use requirements, and those skilled in the art can select them according to the actual needs; in the present application, the first structure is preferably adopted, and the spring 700 is attached to the third forming block 63.

Specifically, as shown in fig. 8, 9 and 12; the two sides of the second forming block 62 are provided with a first mounting groove 622 vertically penetrating therethrough, and one side of the third forming block 63 close to the second forming block 62 is provided with a second mounting groove 631 having a certain depth. The first mounting groove 622 and the second mounting groove 631 can form a mounting groove for placing the spring 700 in a mutually matched manner, the lower end of the spring 700 abuts against the third forming block 63, the upper end of the spring 700 abuts against the first forming block 61, and the spring 700 is in a compressed state all the time in the mold opening process.

It can be understood that, in order to satisfy the requirement of the elastic force, the diameter of the spring 700 is relatively large, and if the installation groove is directly formed in the third molding block 63, the structural strength of the third molding block 63 may not be satisfied, so that the installation groove is divided into two parts and respectively arranged in the second molding block 62 and the third molding block 63, and the first installation groove 622 located in the second molding block 62 is arranged in a penetrating manner, so as to ensure that the movement of the second molding block 62 does not interfere with the spring 700 in the second process.

In one embodiment of the present application, as shown in fig. 4, 10, 11, and 13, the second demolding mechanism 8 includes a second top plate 81 and a third ejector 82. The second top plate 81 is vertically slidably mounted on the upper die 200, a second sliding groove 810 is provided on the second top plate 81, and the extending direction of the second sliding groove 810 is parallel to the opening direction of the mounting portion 110. The third push rod 82 is obliquely and slidably mounted on the upper die 200, the upper portion of the third push rod 82 is slidably connected to the second sliding groove 810, and the lower end of the third push rod 82 is fixedly connected to the corresponding first molding block 61.

When the first process is performed, the upper die 200 moves up vertically, at this time, the first forming block 61 can make the second top plate 81 keep still by abutting against the mounting portion 110 in the vertical direction, and then the upper die 200 can drive the third top rod 82 to slide along the second sliding groove 810 by moving up until the first forming block 61 is separated from the mounting portion 110.

When the second process is performed, since the first molding block 61 is already separated from the mounting portion 110, the first molding block 61 can synchronously move upwards along with the upper die 200 through the third push rod 82, and the second molding block 62 is driven by the connecting structure to synchronously move upwards vertically in the process of moving upwards until the second molding block 62 abuts against the mounting portion 110. In the process, the second forming block 62 can drive the third forming block 63 to horizontally move towards the second forming block 62 through the cooperation of the driving structure and the third forming block 63 until the third forming block 63 is separated from the protruding structures on the two sides of the mounting portion 110.

When the third process is performed, the second forming block 62 abuts against the mounting portion 110 in the vertical direction, so that the second top plate 81 is kept still again, and the upper mold 200 continues to move upwards to drive the third top rod 82 to continue sliding along the second sliding groove 810 until the second forming block 62 together with the third forming block 63 is separated from the mounting portion 110.

As can be seen from fig. 4, 10, 11 and 13, the length of the third push rod 82 is long, and the length of the rod section where the third push rod 82 and the upper die 200 are engaged with each other is short, so that the third push rod 82 may be bent due to the influence of rigidity during the die opening process, and interference may be easily caused by relative sliding of the third push rod 82 and the upper die 200.

In order to ensure the structural rigidity of the third push rod 82, in the present embodiment, as shown in fig. 4, 10, 11 and 13, a sliding block is slidably mounted in the second sliding groove 810; the upper end of the third top rod 82 is fixedly connected with the sliding block. The second demolding mechanism 8 further includes a guide rod 83; the guide rod 83 and the third push rod 82 are arranged in parallel, two ends of the guide rod 83 are fixedly connected with the upper die 200, and the guide rod 83 and the sliding block are in sliding fit in the axial direction. When the mold is opened, the sliding block slides along the guide rod 83 to drive the third top rod 82 to slide along the second sliding groove 810, so that the deformation force applied to the third top rod 82 can be reduced, and the structural rigidity of the third top rod 82 is ensured.

In one embodiment of the present application, as shown in fig. 3, 4 and 14, a first core 500 is slidably mounted to the lower mold 300 for molding the back of the mounting portion 110. The first mold releasing mechanism 4 is attached to the lower mold 300, and the first mold core 500 and the molded seat frame 100 are connected to the first mold releasing mechanism 4. After the upper mold 200 is opened, the first demolding mechanism 4 may vertically lift the molded seat frame 100 to separate from the lower molding module 310; and during the process that the seat frame 100 moves vertically upwards, the first demolding mechanism 4 can drive the first core 500 to move in the direction away from the mounting part 110 until the first core 500 is separated from the back part of the mounting part 110.

In the present embodiment, there are various specific configurations of the first demolding mechanism 4, including but not limited to the following two.

The structure I is as follows: as shown in fig. 3, 4, and 14, the first ejector mechanism 4 includes a driving device 41, a first top plate 42, a pair of first ejector pins 43, and a second ejector pin group 44. The driving device 41 is fixedly installed on the lower die 300 and connected with the first top plate 42 through an output end; the first top plate 42 is vertically matched with the lower die 300 in a sliding manner, and a first sliding groove 420 is formed in the first top plate 42; the first push rod 43 is obliquely arranged, the upper end of the first push rod 43 is fixedly connected with the corresponding first mold core 500, and the lower end of the first push rod 43 is in sliding fit with the first sliding chute 420 through a fixed sliding block; the second ejector rod group 44 is vertically arranged, the upper end of the second ejector rod group 44 can be matched with the forming cavity, the seat framework 100 after forming is conveniently connected, and the lower end of the second ejector rod group 44 is fixedly connected with the first top plate 42. After the mold opening is completed, the driving device 41 may drive the first top plate 42 to drive the second top rod set 44 to move vertically upwards to jack up the formed seat frame 100; at the same time, the first top plate 42 also drives the first top bar 43 to move obliquely upward to drive the first core 500 to move horizontally while moving vertically upward to be away from the mounting portion 110.

The structure II is as follows: the first ejector mechanism 4 includes a pair of driving devices 41, a first top plate 42, and a second top plate group 44. The two driving devices 41 are fixedly arranged on the lower die 300, wherein one driving device 41 is vertically arranged and connected with the first top plate 42 through an output end, and the other driving device 41 is horizontally arranged and connected with the first mold core 500 through an output end; first roof 42 and the vertical sliding fit of lower mould 300, second ejector pin group 44 fixed mounting is in first roof 42 and carries out vertical setting, and the upper end of second ejector pin group 44 can cooperate with the shaping chamber to conveniently be connected with seat frame 100 after the shaping. After the mold opening is completed, one of the driving devices 41 drives the first mold core 500 to move away from the mounting portion 110 until the first mold core 500 is separated from the mounting portion 110, and then the other driving device 41 drives the first top plate 42 to drive the second top rod set 44 to jack up the molded seat frame 100 to be separated from the lower mold 300.

It is understood that the driving device 41 is a conventional driving device, and the driving device 41 is commonly an air cylinder, a hydraulic cylinder, a linear motor, and the like. For the two structures, the skilled person can select them according to actual needs; in this embodiment, the first structure is preferably adopted.

For the sake of understanding, the following description of the specific operation of the present application can be made with reference to the accompanying drawings.

(1) As shown in fig. 4, the upper mold 200 and the lower mold 300 are clamped.

(2) When the first process is performed, the upper die 200 may be vertically moved upward as indicated by the dotted arrow, as shown in fig. 10. In the process of moving the upper die 200 upwards, due to the abutting fit of the first forming block 61 and the mounting portion 110 in the vertical direction, the second top plate 81 mounted on the upper die 200 is kept stationary, and the slide block mounted on the second sliding groove 810 is slid relative to the guide rod 83 to drive the third push rod 82 to slide along the second sliding groove 810, so that the first forming block 61 is driven to slide along the opening direction of the mounting portion 110 until the head portion of the first forming block 61 is separated from the mounting portion 110.

(3) When the second process is performed, as shown in fig. 11 and 12, since the first molding block 61 has been disengaged from the mounting portion 110, the first molding block 61 is not interfered when the upper die 200 is moved up, and is moved up in synchronization with the upper die 200 by the third push rod 82. Due to the first separation of the first molding block 61, a gap with the size of X is generated between the second molding block 62 and the mounting portion 110 in the vertical direction, so that the second molding block 62 will move upwards synchronously with the first molding block 61 through the abutting fit of the connecting block 621 and the connecting groove 610 until the second molding block 62 abuts against the mounting portion 110.

During the vertical upward movement of the second molding block 62, the spring 700 vertically presses the third molding block 63 by an elastic force so that the third molding block 63 is kept still in the vertical direction at all times. Meanwhile, through the cooperation of the driving block 630 on the third forming block 63 and the driving groove 620 on the second forming block 62, the two third forming blocks 63 can perform opposite contraction movement, so as to be disengaged from the formed protrusion structure.

(4) When the third process is performed, as shown in fig. 13, the specific process is similar to the first process. After the second forming block 62 and the third forming block 63 are completely separated from the mounting portion 110, the second core 6 as a whole can move up along with the upper die 200, so as to facilitate the subsequent blanking process.

(5) After the mold opening is completed, the driving device 41 of the first demolding mechanism 4 is activated, so that the second ejector rod group 44 can be driven to drive the molded seat frame 100 to vertically move upwards through the vertical upwards movement of the first top plate 42 until the molded seat frame is separated from the lower mold 300. In addition, during the process of moving the seat frame 100 vertically upwards, the first top plate 42 may further drive the first top rod 43 to drive the first core 500 to move upwards in an inclined manner, so as to ensure that the first core 500 may move horizontally relative to the seat frame 100 away from the mounting portion 110.

(6) After the blanking of the seat frame 100 is completed, the first push rod 43 and the second push rod group 44 can be driven to reset by the reverse driving of the driving device 41.

Then, the upper mold 200 is vertically moved down to effect mold clamping with the lower mold 300. During the vertical downward movement of the upper mold 200, the third forming block 63 first contacts the lower mold 300, and as the upper mold 200 continues to move downward, the third forming block 63 compresses the spring 700 by abutting against the lower mold 300, and performs a horizontal movement back to the second forming block 62 by the driving structure until the second forming block 62 abuts against the lower mold 300.

Then, the upper die 200 continues to move downwards, so that the sliding block mounted on the second sliding groove 810 slides along the guide rod 83 by the abutting of the second forming block 62 and the lower die 300, and further the sliding block is driven to drive the third push rod 82 to slide along the second sliding groove 810, so that the first forming block 61 slides relative to the second forming block 62 until the connecting block 621 of the second forming block 62 abuts against the other end of the connecting groove 610 on the first forming block 61. Subsequently, the first and second molding blocks 61 and 62 may be simultaneously moved toward the first insert 500 along the lower mold 300 until the second molding block 62 and the first insert 500 are abutted; the upper mold 200 is just covered with the lower mold 300.

The foregoing has described the principles, principal features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. The utility model provides a demoulding structure of car seat skeleton which characterized in that includes:

an upper die and a lower die; and

a pair of second cores; the second cores are correspondingly arranged on the upper die through a second demolding mechanism; the second core is suitable for being matched with the lower die through the head part so as to form an installation part of the seat framework;

when the upper die moves upwards and opens the die, the second core is suitable for sequentially performing a first process, a second process and a third process through the second demoulding mechanism; wherein the first process: the upper part of the second mold core slides towards the opening direction of the mounting part until the second mold core is separated; the second process: the upper part of the second core moves upwards synchronously with the upper die to drive two sides of the lower part of the second core to contract; the third process: and the second core integrally slides towards the opening direction of the mounting part continuously until the lower part of the second core is separated from the mounting part.

2. The release structure for a vehicle seat frame according to claim 1, wherein the second core includes:

a first molding block, a head portion of which is used for molding a part mounting portion, the first molding block being adapted to be connected with the second demolding mechanism;

a second molding block, a head part of which is used for molding a part mounting part; the second forming block is positioned at the lower part of the second core and is matched with the first forming block through a connecting structure; and

the pair of third forming blocks are used for forming the protruding structures on the side edges of the mounting parts; the third forming blocks are respectively positioned at two sides of the second forming block and are matched with the second forming block through a driving structure;

when the first process is carried out, the first molding block is suitable for sliding relative to the second molding block under the driving of the second demolding mechanism; when the second process is performed, the second forming block is adapted to move upwards synchronously with the first forming block through the connecting structure, so that the third forming blocks perform opposite movement through the driving structure.

3. The structure for releasing a vehicle seat frame of claim 2, wherein: the connecting structure comprises a connecting groove and a connecting block which are in sliding fit; the connecting groove and the connecting block are respectively arranged on the first forming block and the second forming block, and the extending direction of the connecting groove is parallel to the opening direction of the mounting part;

when the first process is carried out, the connecting block is suitable for relatively sliding along the connecting groove, so that the second forming block is kept static, and then the first forming block moves to the head part detaching installation part along the opening direction of the installation part;

when a second process is carried out, the connecting block is suitable for being abutted against the connecting groove, so that the second forming block moves upwards synchronously and vertically along with the first forming block.

4. The structure for releasing a vehicle seat frame of claim 2, wherein: the vertical section of the second forming block is in an inverted frustum shape, and the adjacent side surfaces of the third forming block and the second forming block are parallel to each other; the driving structure comprises a driving groove and a driving block which are in sliding fit; the driving groove and the driving block are respectively arranged on the second forming block and the third forming block; when the second process is carried out, the second forming block moves upwards vertically along with the first forming block, so that the third forming block is driven to move horizontally towards the second forming block through the relative sliding of the driving block along the driving groove until the third forming block is separated from the formed convex structure.

5. The structure for releasing a vehicle seat frame of claim 2, wherein: the third forming block is further engaged with the first forming block by a stop structure such that in a second process the third forming block remains stationary relative to vertical.

6. The structure for releasing a vehicle seat frame of claim 5, wherein: the limiting structure comprises a spring; the spring is arranged on the third forming block, so that the upper end of the spring is abutted against the first forming block; or the spring is arranged on the first forming block, so that the lower end of the spring is abutted against the third forming block; the spring is always in a compressed state, so that in the second process, the third forming block is kept vertically still under the elastic force of the spring.

7. The structure for releasing a vehicle seat frame of any one of claims 2 to 6, wherein: the second demolding mechanism comprises a second top plate and a pair of third ejector rods; the second top plate is vertically and slidably mounted on the upper die, a second sliding groove is formed in the second top plate, and the extending direction of the second sliding groove is parallel to the opening direction of the mounting part; the third ejector rod is obliquely and slidably arranged on the upper die, the upper part of the third ejector rod is slidably connected with the second sliding chute, and the lower end of the third ejector rod is connected with the corresponding first forming block;

when the first process is carried out, the first forming block is abutted against the mounting part in the vertical direction, so that the second top plate keeps static, and the upper die is suitable for driving the third ejector rod to slide along the second sliding groove until the first forming block is separated from the mounting part;

when the second process is carried out, the first forming block drives the second forming block to synchronously and vertically move upwards through the connecting structure until the second forming block abuts against the mounting part;

when the third process is carried out, the second forming block is abutted against the mounting portion in the vertical direction, so that the second top plate is kept still again, and the upper die is suitable for driving the third ejector rod to continue to slide along the second sliding groove until the second forming block and the third forming block are separated from the mounting portion.

8. The structure for releasing a vehicle seat frame of claim 7, wherein: a sliding block is arranged in the second sliding chute in a sliding manner; the upper end of the third ejector rod is fixedly connected with the sliding block; the second demolding mechanism further comprises a guide rod; the guide rod and the third ejector rod are arranged in parallel; both ends of the guide rod are fixedly connected with the upper die, and the guide rod and the sliding block are in sliding fit along the axial direction; when the mould is opened, the third ejector rod is suitable for sliding along the guide rod through the sliding block.

9. The structure for releasing a vehicle seat frame of claim 1, wherein: the lower die is also provided with a first core and a first demolding mechanism, and the first core is suitable for being matched with the head of the second core to form a mounting part; the first demolding mechanism is connected with the first mold core and the molded seat framework; when the mould is opened, the first demoulding mechanism is suitable for a seat framework formed by vertically jacking and is vertically upwards moved to be separated from the lower mould in the process of the lower mould, and the first demoulding mechanism is further suitable for driving the first mould core to move in the opposite direction of the opening of the mounting part until the first mould core is separated from the mounting part.

10. The structure for releasing a vehicle seat frame of claim 9, wherein: the first demolding mechanism comprises a pair of driving devices, a first top plate and a second top rod group, the two driving devices are fixedly arranged on the lower mold, one driving device is vertically arranged and connected with the first top plate through an output end, and the other driving device is horizontally arranged and connected with the first mold core through an output end; the first top plate is vertically matched with the lower die in a sliding mode, the second ejector rod group is fixedly installed on the first top plate and is vertically arranged, and the upper end of the second ejector rod group is suitable for being connected with a formed seat framework; after the mold opening is completed, one of the driving devices is suitable for driving the first mold core to move away from the mounting part until the first mold core is separated from the mounting part; and the other driving device drives the first top plate to drive the second top rod group to vertically jack the formed seat framework to be separated from the lower die.

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