Integrated injection molding mold for jute fiber automobile seat backrest

Abstract

The utility model provides a jute fiber automobile seat backrest integrated injection molding mould, which comprises a top plate, an upper mould, a lower mould, an ejector plate and a bottom plate, the upper mould is provided with a base groove for placing a jute fiber plate, the lower mould is provided with a molding groove for molding a connecting piece, and a molding cavity is formed between the molding groove and the jute fiber plate. A runner cavity is further formed between the ejector plate and the bottom plate, a plurality of heating assemblies and an injection pipe are arranged in the runner cavity, the injection pipe penetrates through the ejector plate and the lower mold and is communicated with the forming cavity, a plurality of ejector block sets are further arranged on the lower mold, and the ejector block sets are used for abutting against the fibrilia plate. The injection molding opening is formed in the bottom plate, and the base groove is formed in the upper mold, so that a jute fiber plate is placed in the molding cavity during mold closing, the jute fiber plate is tightly propped by the ejection block group and then the mold closing is performed, and the direct injection molding of a connecting piece on the jute fiber plate is realized; the forming strength and forming precision of the jute fiber board and the connecting piece are guaranteed, assembling is not needed, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to an integrated injection moulding mould for a hemp fibre automobile seat backrest. Background Art

[0002] The structure of a car seat mainly includes a frame, a plastic back panel, a foam sponge and an outer skin. At present, a Chinese patent with a publication number of CN210174689U discloses an integrated car seat back plastic back panel assembly and a seat back, including a plastic back panel body, a back panel fabric and a plastic back panel fixing plate. The plastic back panel body and the plastic back panel fixing plate are both injection molded by an injection molding process, and the overall weight is heavy. In order to adapt to the electric vehicle market, it is essential to reduce the weight of the car seat.

[0003] like Figure 1 As shown, a hemp fiber car seat back includes a hemp fiber board 90 and a connecting piece 91. The hemp fiber board 90 and the connecting piece 91 are manufactured separately and fixed by manual splicing. The connecting piece 91 includes a plurality of interface blocks 92 and a mesh plate 93 connecting the interface blocks 92. The interface blocks 92 are used to connect the frame. The interface blocks 92 are provided with undercuts 94. The use of the hemp fiber board 90 makes the seat back have the advantages of being lighter and more environmentally friendly. However, it is troublesome to fix the hemp fiber board 90 and the connecting piece 91 manually, and the connection accuracy is low, which makes it easy to produce defective products. Utility Model Content

[0004] In view of this, the utility model aims to provide a hemp fiber automobile seat back integrated injection molding mold, which has the function of injection molding connectors on the hemp fiber.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a hemp fiber automobile seat back integrated injection molding mold, comprising a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate, the upper mold is provided with a base groove for placing a hemp fiber board, the lower mold is provided with a molding groove for molding a connecting piece, a molding cavity is formed between the molding groove and the hemp fiber board, the injection port of the mold is provided on the bottom plate, a runner cavity is also provided between the ejector plate and the bottom plate, a plurality of heating components and injection tubes are arranged in the runner cavity, the injection tubes pass through the ejector plate and the lower mold and are connected with the molding cavity, a plurality of ejector block groups are also provided on the lower mold, the ejector block groups are used to press against the hemp fiber board, and a molding block group for molding an interface block is also provided on the lower mold.

[0006] Through the above-mentioned technical means, by setting the injection port at the bottom plate and opening a base groove on the upper mold, the hemp fiberboard is placed in the molding cavity between the molds, and the hemp fiberboard is pressed tightly by the top block group and then the mold is closed, so as to realize direct injection molding of the connector on the hemp fiberboard, ensure the molding strength and molding accuracy of the hemp fiberboard and the connector, without the need for assembly, and reduce labor costs.

[0007] Preferably, the ejector plate is further provided with a plurality of ejector rod groups and oblique pull rod groups, the ejector rod groups all pass through the lower mold and are connected to the ejector block group, and the oblique pull rod group is used to connect the molding block group and realize the core pulling function.

[0008] Through the above technical means, the ejection and core pulling molding of the product are completed through the ejector rod group and the inclined pull-out rod group.

[0009] Preferably, the top block group includes top block one and top block two, the top block one is used to abut against the hemp fiberboard and form a mesh plate, and the top block two is used to abut against the hemp fiberboard and form an interface block.

[0010] Through the above technical means, the top block 1 and the top block 2 are used to press against the hemp fiberboard and form the mesh plate and the interface block, so that the plastic molding is completed while the hemp fiberboard is fixed, and the mesh plate and the interface block are driven to move during ejection.

[0011] Preferably, the forming block group includes forming block one, forming block two and forming block three, the forming block one cooperates with the ejector block two to form an undercut, the forming block two and the forming block three cooperate with the lower mold to form an undercut, the oblique pull-out rod group is respectively fixed to the forming block one, the forming block two and the forming block three, an oblique pull-out drive source is also provided on the ejection plate, and the oblique pull-out rod group is connected to the oblique pull-out drive source.

[0012] Through the above technical means, the undercut is formed by the cooperation between the forming block 1 and the top block 2, which makes the demoulding of the undercut easier. The oblique pulling drive source controls the oblique pulling rod group to drive the forming block 1, the forming block 2, and the forming block 3 to move, thereby completing the core pulling action.

[0013] Preferably, the oblique pulling drive source includes a pair of clamping blocks and a pair of sliding blocks, the clamping blocks are fixedly arranged on the ejection plate, the side ends of the two clamping blocks are provided with sliding inclined grooves, the sliding blocks are slidably arranged in the sliding grooves, and the tail of the oblique pulling rod group is also provided with a hinged head, and the two ends of the hinged head are hingedly arranged on the sliding block.

[0014] Through the above technical means, through the cooperation between the slider and the sliding chute, and through the hinged cooperation between the hinge head and the slider, the ejector plate directly drives the forming block group to disengage from the undercut during ejection, thereby completing the core pulling action.

[0015] Preferably, push holes are provided at both side ends of the forming block, countersunk holes are provided at the side ends of the push holes, a push rod is provided in the countersunk holes, a push head is provided on one side of the push rod, the push head is slidably arranged in the push hole, a spring is provided between the bottom surface of the countersunk hole and the push rod, a guide inclined surface is provided at the tail of the push rod, and a travel inclined surface cooperating with the guide inclined surface is also provided on the lower mold.

[0016] Through the above technical means, the stroke inclined surface cooperates with the push rod, so that the forming block 2 pushes the ejector head toward the product direction during the upward movement, so that the product is separated from the forming block 2 to prevent mold sticking. The spring is used to ensure that the tail of the push rod always presses against the stroke inclined surface.

[0017] Preferably, an ejection cylinder is further provided at the side end of the lower mold, and an output end of the ejection cylinder is fixedly connected to the ejection plate.

[0018] Through the above technical means, the ejection plate is driven to move by the ejection cylinder to realize the ejection of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a hemp fiber seat back panel;

[0020] Figure 2 It is a structural schematic diagram of an embodiment;

[0021] Figure 3 It is a structural schematic diagram of the upper die;

[0022] Figure 4 It is a structural schematic diagram of the lower mold;

[0023] Figure 5 It is a partial schematic diagram of an embodiment;

[0024] Figure 6 It is a schematic diagram of the structure of the forming block 1 and the top block 2;

[0025] Figure 7 It is the explosion diagram of the oblique pumping driving source;

[0026] Figure 8 It is a structural schematic diagram of the forming block 2;

[0027] Fig. 9 It is a cross-sectional schematic diagram of the forming block 2.

[0028] Figure numerals: 1, top plate; 2, upper mold; 3, lower mold; 4, ejector plate; 5, bottom plate; 6, ejector oil cylinder; 7, base groove; 8, molding groove; 9, injection port; 10, flow channel cavity; 11, heating assembly; 12, injection tube; 13, ejector block group; 14, molding block group; 15, ejector rod group; 16, oblique pull rod group; 17, ejector block 1; 18, ejector block 2; 19, molding block 1; 20, molding block 2; 21. Forming block three; 22. Oblique extraction drive source; 23. Clamping block; 24. Sliding block; 25. Hinge head; 26. Sliding inclined groove; 27. Pushing hole; 28. Countersunk hole; 29. ​​Pushing rod; 30. Ejector head; 31. Spring; 32. Guide slope; 33. Travel slope; 34. Travel block; 90. Hemp fiberboard; 91. Connector; 92. Interface block; 93. Mesh plate; 94. Undercut. DETAILED DESCRIPTION

[0029] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0030] A hemp fiber automobile seat back integrated injection molding mold comprises a top plate 1, an upper mold 2, a lower mold 3, an ejector plate 4 and a bottom plate 5. An ejector oil cylinder 6 is also provided at the side end of the lower mold 3. The output end of the ejector oil cylinder 6 is fixedly connected to the ejector plate 4. When the ejector oil cylinder 6 is retracted, the ejector plate 4 moves upward. A base groove 7 for placing a hemp fiber board 90 is provided at the bottom of the upper mold 2. A molding groove 8 for molding a connecting piece 91 is provided on the lower mold 3. A molding cavity is formed between the molding groove 8 and the hemp fiber board 90.

[0031] The mold as a whole is inverted, and the injection port 9 of the mold is opened on the bottom plate 5. A runner cavity 10 is also opened between the ejector plate 4 and the bottom plate 5. A plurality of heating components 11 and injection tubes 12 are arranged in the runner cavity 10. The heating component 11 includes a heating wire for keeping the plastic flowing through the injection tube 12 warm. The injection tube 12 passes through the ejector plate 4 and the lower mold 3 and extends into the molding cavity.

[0032] The lower mold 3 is also provided with a plurality of ejector block groups 13, which are used to press against the hemp fiberboard 90. The lower mold 3 is also provided with a forming block group 14 for forming the interface block 92. The ejector plate 4 is also provided with a plurality of ejector rod groups 15 and an inclined pull rod group 16. The ejector rod groups 15 all pass through the lower mold 3 and are connected to the ejector block group 13. The inclined pull rod group 16 is used to connect the forming block group 14 and realize the core pulling function. When installing the hemp fiberboard 90, the upper mold 2 is separated from the lower mold 3 first, and the worker After placing the hemp fiberboard 90 in the base groove 7, the ejection cylinder 6 drives the ejection block group 13 to eject and fix the hemp fiberboard 90 and then close the mold. After the ejection cylinder 6 drives the ejection block group 13 to eject, it removes the internal liquid pressure, the upper mold 2 and the lower mold 3 are gradually merged, and the ejected ejection block group 13 and the ejection plate 4 are gradually pressed back. When the upper mold 2 and the lower mold 3 are completely merged, the ejection plate 4 and the ejection block group 13 return to their original positions. At this time, the lower mold 3 and the ejection block group 13 jointly resist the hemp fiberboard 90.

[0033] The top block group 13 includes a top block 17 and a top block 18. The top block 17 is arranged on one side and the middle of the hemp fiber board 90 to form a mesh plate 93. The top block 18 is arranged on the other side of the hemp fiber board 90 to form an interface block 92. The forming block group 14 includes a forming block 19, a forming block 20 and a forming block 3 21. The forming block 19 cooperates with the top block 2 18 to form an undercut 94. The forming block 20 and the forming block 3 21 cooperate with the lower mold 3 to form undercuts 94 at different positions. The oblique pull rod group 16 includes a plurality of oblique pull rods, which are respectively fixed to the forming block 19, the forming block 20 and the forming block 3 21. An oblique pull drive source 22 is also provided on the ejection plate 4, and the oblique pull rod group 16 is connected to the oblique pull drive source 22.

[0034] The oblique pulling driving source 22 includes a pair of clamping blocks 23 and a pair of sliders 24. The clamping blocks 23 are fixedly arranged on the ejection plate 4. The side ends of the two clamping blocks 23 are provided with sliding inclined grooves 26. The sliders 24 are slidably arranged in the sliding grooves. A hinge head 25 is also arranged at the tail of the oblique pulling rod group 16. Both ends of the hinge head 25 are hingedly arranged on the sliders 24. When the ejection plate 4 moves upward, the oblique pulling rod moves along the direction of the oblique hole in the lower mold 3. At this time, the angle between the oblique pulling rod and the ejection plate 4 changes, and the sliders 24 move along the sliding inclined grooves 26. The ejection block 1 17 and the ejection block 2 18 drive the product to move upward. The oblique pulling rod group 16 drives the forming block group 14 to tilt in different directions and make the undercut 94 come out, thereby completing the core pulling action.

[0035] The side end of the forming block 20 is also provided with a push hole 27, and the side end of the push hole 27 is also provided with a countersunk hole 28. A push rod 29 is provided in the countersunk hole 28. A head 30 is provided on one side of the push rod 29. The head 30 is slidably arranged in the push hole 27. A spring 31 is provided between the bottom surface of the countersunk hole 28 and the push rod 29. A guide inclined surface 32 is provided at the tail of the push rod 29. A travel inclined surface 33 cooperating with the guide inclined surface 32 is also provided on the lower mold 3. The lower half of the travel inclined surface 33 is vertically arranged. The upper half is inclined. When the ejector plate 4 moves upward, the forming block 20 moves in the inclined direction and performs core pulling. At this time, the stroke inclined surface 33 pushes the ejector rod 29 to move, so that the ejector head 30 gradually exposes the ejector hole 27, thereby pushing the product out. The side end of the ejector rod 29 is also provided with a stroke block 34 for limiting the moving distance of the ejector rod 29. The stroke block 34 prevents the ejector rod 29 from being separated from the countersunk hole 28 as a whole. When the forming block 20 returns to its original position, the stroke inclined surface 33 guides the ejector rod 29 to return to its original position automatically.

[0036] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the scope of protection required by the present invention.

Claims

1. A hemp fiber automobile seat back integral injection molding mold, comprising a top plate (1), an upper mold (2), a lower mold (3), an ejector plate (4) and a bottom plate (5), wherein: The upper mold (2) is provided with a base groove (7) for placing a hemp fiberboard (90), the lower mold (3) is provided with a molding groove (8) for molding a connecting piece (91), a molding cavity is formed between the molding groove (8) and the hemp fiberboard (90), a glue injection port (9) of the mold is provided on the bottom plate (5), a flow channel cavity (10) is provided between the ejector plate (4) and the bottom plate (5), a plurality of heating components (11) and injection tubes (12) are provided in the flow channel cavity (10), the injection tubes (12) pass through the ejector plate (4) and the lower mold (3) and are connected to the molding cavity, a plurality of ejector block groups (13) are provided on the lower mold (3), the ejector block groups (13) are used to press against the hemp fiberboard (90), and a molding block group (14) for molding an interface block (92) is provided on the lower mold (3).

2. The one-piece injection molding mold for a hemp fiber automobile seat back according to claim 1 is characterized by: The ejector plate (4) is also provided with a plurality of ejector rod groups (15) and an inclined pull rod group (16). The ejector rod groups (15) all pass through the lower mold (3) and are connected to the ejector block group (13). The inclined pull rod group (16) is used to connect the molding block group (14) and realize the core pulling function.

3. The one-piece injection molding mold for a hemp fiber automobile seat back according to claim 2 is characterized by: The top block group (13) comprises a top block one (17) and a top block two (18), wherein the top block one (17) is used to abut against the hemp fiberboard (90) and form a mesh plate (93), and the top block two (18) is used to abut against the hemp fiberboard (90) and form an interface block (92).

4. The one-piece injection molding mold for a hemp fiber automobile seat back according to claim 3 is characterized by: The molding block group (14) comprises a molding block one (19), a molding block two (20) and a molding block three (21); the molding block one (19) cooperates with the ejector block two (18) to form an undercut (94); the molding block two (20) and the molding block three (21) cooperate with the lower mold (3) to form an undercut (94); the oblique extraction rod group (16) is respectively fixed to the molding block one (19), the molding block two (20) and the molding block three (21); an oblique extraction driving source (22) is also provided on the ejector plate (4); and the oblique extraction rod group (16) is connected to the oblique extraction driving source (22).

5. The one-piece injection molding mold for a hemp fiber automobile seat back according to claim 4 is characterized in that: The oblique extraction driving source (22) comprises a pair of clamping blocks (23) and a pair of sliding blocks (24), the clamping blocks (23) are fixedly arranged on the ejection plate (4), the side ends of the two clamping blocks (23) are provided with sliding inclined grooves (26), the sliding blocks (24) are slidingly arranged in the sliding grooves, and the tail of the oblique extraction rod group (16) is also provided with a hinged head (25), and the two ends of the hinged head (25) are hingedly arranged on the sliding block (24).

6. The one-piece injection molding mold for a hemp fiber automobile seat back according to claim 4 is characterized by: The second side end of the molding block (20) is also provided with a push hole (27), and the side end of the push hole (27) is also provided with a countersunk hole (28). A push rod (29) is provided in the countersunk hole (28), and a head (30) is provided on one side of the push rod (29). The head (30) is slidably arranged in the push hole (27), and a spring (31) is arranged between the bottom surface of the countersunk hole (28) and the push rod (29). A guide inclined surface (32) is provided at the tail of the push rod (29), and a travel inclined surface (33) cooperating with the guide inclined surface (32) is also provided on the lower mold (3).

7. The one-piece injection molding mold for a hemp fiber automobile seat back according to claim 1 is characterized by: The side end of the lower mold (3) is also provided with an ejection cylinder (6), and the output end of the ejection cylinder (6) is fixedly connected to the ejection plate (4).

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