Novel module type rapid interchanging mechanism for afternoon nap desk and chair mold

Abstract

The utility model provides a novel afternoon nap desk and chair mold modular quick exchange mechanism, and belongs to the technical field of molds. The mold comprises an upper mold plate and a lower mold plate, a desk and chair forming cavity composed of a chair back forming part, a chair seat forming part, a front chair leg forming part and a rear chair leg forming part is arranged between the upper mold plate and the lower mold plate, and modular quick interchange structures corresponding to the rear chair leg forming part are arranged on the two sides of the lower mold plate. And the chair seat forming part is also provided with a chair seat supporting plate forming structure. A desk and chair forming cavity composed of the chair back forming part, the chair seat forming part, the front chair leg forming part and the rear chair leg forming part can integrally form the afternoon nap desk and chair in an injection molding mode, and the modular rapid interchange structure can be changed through modular design so that the purpose of rapidly producing products with different local structures can be achieved. According to the chair seat supporting plate forming structure, a supporting structure can be formed at the bottom of a chair seat during desk and chair production, and the bearing capacity of the chair can be greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a novel modular quick-change mechanism for nap desks and chairs. Background Technology

[0002] Plastic nap desks and chairs are generally injection molded in one piece using a mold. However, in the current technology, the seat of the nap desk and chair molded by the mold has a small load-bearing capacity and is prone to damage during use.

[0003] For example, a Chinese patent discloses a demolding mechanism for a plastic chair seat mold [Application No.: 201120175716.7], which includes a fixed module and a moving module of the mold. The fixed module and the moving module are connected by guide pillars, and a mold cavity for the plastic chair seat is formed between the fixed module and the moving module. The key feature is that a chair seat insert is provided in the mold cavity, and the chair seat insert contacts the bottom of the plastic chair seat. A guide rod passes through the chair seat insert, one end of the guide rod is movably connected to the fixed module, and the other end of the guide rod is fixedly connected to the moving module. The mechanism is formed in the chair seat insert. There is a limiting hole through which a pull rod passes, and the pull rod is connected to the moving module. A front outer slider and a rear outer slider are respectively set on the front and rear sides of the seat insert. A front outer hydraulic cylinder and a rear slider hydraulic cylinder are respectively installed on the front outer slider and the rear outer slider. The piston rods of the front outer hydraulic cylinder and the rear slider hydraulic cylinder are each connected to the seat insert. An ejector bracket is installed on either the left or right side of the seat insert. An ejector hydraulic cylinder is installed on the ejector bracket. The ejector hydraulic cylinder is connected to an ejector plate. The ejector plate is connected to an ejector rod. The ejector rod passes through the seat insert and contacts the bottom surface of the plastic seat. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a novel modular quick-interchange mechanism for nap desks and chairs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel modular quick-change mechanism for nap desks and chairs includes an upper template and a lower template. A desk and chair forming cavity composed of a backrest forming part, a seat forming part, a front leg forming part, and a rear leg forming part is provided between the upper and lower templates. Modular quick-change structures corresponding to the rear leg forming parts are provided on both sides of the lower template. A seat support plate forming structure is also provided at the seat forming part.

[0007] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, the seat support plate forming structure includes a front support plate forming groove and a rear support plate forming groove recessed inward at the bottom of the seat forming part on the lower template, and the front support plate forming groove and the rear support plate forming groove are arranged in parallel.

[0008] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, the adjacent sides of the front support plate forming groove and the rear support plate forming groove are respectively provided with a front support plate auxiliary forming plate and a rear support plate auxiliary forming plate. Both the front support plate auxiliary forming plate and the rear support plate auxiliary forming plate are provided with at least two reinforcing rib forming grooves that are recessed inward.

[0009] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, the reinforcing rib forming groove on the front support plate auxiliary forming plate is located on the side of the front support plate auxiliary forming plate close to the front support plate forming groove; the reinforcing rib forming groove on the rear support plate auxiliary forming plate is located on the side of the rear support plate auxiliary forming plate close to the rear support plate forming groove.

[0010] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, two front connecting rods are fixedly connected to the bottom of the front support plate auxiliary forming plate. The front connecting rods are connected to the top plate located on the lower side of the lower template through a first sliding connection structure. Two rear connecting rods are fixedly connected to the bottom of the rear support plate auxiliary forming plate. The rear connecting rods are connected to the top plate through a second sliding connection structure. The top of the front connecting rods is inclined towards the forming groove of the rear support plate, and the top of the rear connecting rods is inclined towards the forming groove of the front support plate.

[0011] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, a limiting plate is provided between the front connecting rod and the rear connecting rod on the same side. The limiting plate is fixed to the bottom of the lower template, and the front connecting rod and the rear connecting rod pass through the limiting plate and are slidably connected to it.

[0012] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, the first sliding connection structure includes a first connecting seat fixed on the top plate. The first connecting seat has a first connecting groove with a T-shaped cross-section recessed inward. The bottom end of the front connecting rod has a T-shaped cross-section and is slidably connected to the first connecting groove.

[0013] In the aforementioned novel modular quick-interchange mechanism for nap desks and chairs, the second sliding connection structure includes a second connecting seat fixed on the top plate. The second connecting seat is recessed inward and has a second connecting groove with a T-shaped cross-section. The bottom end of the rear connecting rod has a T-shaped cross-section and is slidably connected to the second connecting groove.

[0014] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, the rear support plate forming groove is further provided with a reinforcing rib forming groove with a triangular cross section on the side away from the rear support plate auxiliary forming plate.

[0015] In the aforementioned novel modular quick-change mechanism for nap desks and chairs, the modular quick-change structure includes a modular side insert that is slidably disposed in a modular insert mounting groove on the side of the lower template. The inner side of the modular side insert is connected to the rear chair leg forming part, and the top of the modular side insert is detachably fixed to the upper template.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. The desk and chair molding cavity, composed of the backrest molding part, seat molding part, front leg molding part and rear leg molding part, can be integrally injection molded to produce nap desks and chairs. The modular quick-interchange structure can be modified through modular design to achieve the purpose of rapid production of products with different local structures. The seat support plate molding structure can form a support structure at the bottom of the seat during the production of desks and chairs, which can greatly increase the load-bearing capacity of the chair.

[0018] 2. The front support plate forming groove and the rear support plate forming groove can form two support plates at the bottom of the chair seat during the injection molding of the desk and chair, which can effectively improve the load-bearing capacity of the chair seat. The reinforcing rib forming groove on the auxiliary forming plate of the front support plate and the auxiliary forming plate of the rear support plate can form a rib structure on the two support plates, which can increase the overall strength of the support plate.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a structural diagram of the lower template;

[0022] Figure 3 This is a partial structural diagram of the lower template;

[0023] Figure 4 This is a schematic diagram of the molding structure of the chair seat support plate.

[0024] In the diagram, the components are: upper template 1, lower template 2, chair back forming part 3, chair seat forming part 4, front chair leg forming part 5, rear chair leg forming part 6, modular quick-interchange structure 7, chair seat support plate forming structure 8, front support plate forming groove 9, rear support plate forming groove 10, front support plate auxiliary forming plate 11, rear support plate auxiliary forming plate 12, reinforcing rib forming groove 13, front connecting rod 14, top plate 15, rear connecting rod 16, limiting plate 17, first connecting seat 18, first connecting slide 19, second connecting seat 20, second connecting slide 21, reinforcing rib plate forming groove 22, modular insert mounting groove 23, and modular side insert 24. Detailed Implementation

[0025] like Figures 1-4 As shown, a novel modular quick-change mechanism for nap desks and chairs includes an upper template 1 and a lower template 2. A desk and chair forming cavity composed of a backrest forming part 3, a seat forming part 4, a front leg forming part 5, and a rear leg forming part 6 is provided between the upper template 1 and the lower template 2. Modular quick-change structures 7 are provided on both sides of the lower template 2, corresponding to the rear leg forming part 6. A seat support plate forming structure 8 is also provided at the seat forming part 4.

[0026] In this invention, the desk and chair molding cavity, composed of the backrest molding part 3, the seat molding part 4, the front leg molding part 5, and the rear leg molding part 6, can be integrally injection molded to produce a nap desk and chair. The modular quick-interchange structure 7 can be modified through modular design to achieve the purpose of rapid production of products with different local structures. The seat support plate molding structure 8 can form a support structure at the bottom of the seat during the production of the desk and chair, which can greatly increase the load-bearing capacity of the chair.

[0027] Specifically, the chair seat support plate forming structure 8 includes a front support plate forming groove 9 and a rear support plate forming groove 10 recessed inward at the bottom of the chair seat forming part 4 on the lower template 2, wherein the front support plate forming groove 9 and the rear support plate forming groove 10 are arranged in parallel.

[0028] The front support plate forming groove and the rear support plate forming groove can form two support plates at the bottom of the chair seat during the injection molding of the desk and chair, which can effectively improve the load-bearing capacity of the chair seat.

[0029] Specifically, the front support plate forming groove 9 and the rear support plate forming groove 10 are respectively provided on the adjacent sides of the front support plate auxiliary forming plate 11 and the rear support plate auxiliary forming plate 12. Both the front support plate auxiliary forming plate 11 and the rear support plate auxiliary forming plate 12 have at least two inwardly recessed reinforcing rib forming grooves 13. The reinforcing rib forming grooves on the front support plate auxiliary forming plate 11 and the rear support plate auxiliary forming plate 12 can form rib structures on the front and rear support plates, thereby increasing the overall strength of the support plates.

[0030] Specifically, the reinforcing rib forming groove 13 on the front support plate auxiliary forming plate 11 is located on the side of the front support plate auxiliary forming plate 11 near the front support plate forming groove 9; the reinforcing rib forming groove 13 on the rear support plate auxiliary forming plate 12 is located on the side of the rear support plate auxiliary forming plate 12 near the rear support plate forming groove 10; two front connecting rods 14 are fixedly connected to the bottom of the front support plate auxiliary forming plate 11, and the front connecting rods 14 are connected to the top plate 15 located on the lower side of the lower template 2 through a first sliding connection structure; two rear connecting rods 16 are fixedly connected to the bottom of the rear support plate auxiliary forming plate 12, and the rear connecting rods 16 are connected to the top plate 15 through a second sliding connection structure; the top of the front connecting rods 14 is inclined towards the side near the rear support plate forming groove 10, and the top of the rear connecting rods 16 is inclined towards the side near the front support plate forming groove 9. When ejecting the product, the upward movement of the top plate can drive the front support plate auxiliary forming plate 11 to move obliquely upward toward the side closer to the rear support plate forming groove 10 via the front connecting rod, thereby enabling the front support plate auxiliary forming plate 11 to detach from the front support plate while ejecting the product. The upward movement of the top plate can also drive the rear support plate auxiliary forming plate to move obliquely upward toward the side closer to the front support plate forming groove via the rear connecting rod, thereby enabling the rear support plate auxiliary forming plate to detach from the rear support plate while ejecting the product.

[0031] Preferably, a limiting plate 17 is provided between the front connecting rod 14 and the rear connecting rod 16 located on the same side. The limiting plate 17 is fixed to the bottom of the lower template 2, and the front connecting rod 14 and the rear connecting rod 16 pass through the limiting plate 17 and are slidably connected to the limiting plate 17. The limiting plate 17 can limit the movement of the front connecting rod and the rear connecting rod.

[0032] Specifically, the first sliding connection structure includes a first connecting seat 18 fixed to the top plate 15. The first connecting seat 18 has a T-shaped connecting groove 19 recessed inwards. The bottom end of the front connecting rod 14 has a T-shaped cross-section and is slidably connected to the first connecting groove 19. The second sliding connection structure includes a second connecting seat 20 fixed to the top plate 15. The second connecting seat 20 has a T-shaped connecting groove 21 recessed inwards. The bottom end of the rear connecting rod 16 has a T-shaped cross-section and is slidably connected to the second connecting groove 21. When the top plate moves upwards, the front connecting rod can slide within the first connecting groove on the first connecting seat, and the rear connecting rod can slide within the second connecting groove on the second connecting seat.

[0033] Preferably, the rear support plate forming groove 10 is further provided with a reinforcing rib forming groove 22 with a triangular cross section on the side away from the rear support plate auxiliary forming plate 12. The reinforcing rib forming groove 22 can form several reinforcing ribs with triangular cross sections on the rear support plate to further improve the strength of the rear support plate.

[0034] Specifically, the modular quick-interchange structure 7 includes a modular side insert 24 slidably disposed within a modular insert mounting groove 23 on the side of the lower template 2. The inner side of the modular side insert 24 is connected to the rear chair leg forming part 6, and the top of the modular side insert 24 is detachably fixed to the upper template 1. The modular side insert can be replaced, and by replacing the modular side insert, the purpose of quickly producing products with different rear chair leg structures can be achieved.

[0035] The working principle of this utility model is as follows: the desk and chair molding cavity, which is composed of the backrest molding part 3, the seat molding part 4, the front leg molding part 5 and the rear leg molding part 6, can be integrally injection molded to produce a nap desk and chair. The modular quick-interchange structure 7 can be modified through modular design to achieve the purpose of rapid production of products with different local structures. The seat support plate molding structure 8 can form a support structure at the bottom of the seat during the production of the desk and chair, which can greatly increase the load-bearing capacity of the chair.

[0036] The front support plate forming groove and the rear support plate forming groove can form two support plates at the bottom of the chair seat during the injection molding of the desk and chair, which can effectively improve the load-bearing capacity of the chair seat. The reinforcing rib forming groove on the front support plate auxiliary forming plate 11 and the rear support plate auxiliary forming plate 12 can form rib structures on the front and rear support plates, which can increase the overall strength of the support plate.

[0037] When ejecting the product, the upward movement of the top plate can drive the front support plate auxiliary forming plate 11 to move obliquely upward toward the side closer to the rear support plate forming groove 10 via the front connecting rod, thereby enabling the front support plate auxiliary forming plate 11 to detach from the front support plate while ejecting the product. The upward movement of the top plate can also drive the rear support plate auxiliary forming plate to move obliquely upward toward the side closer to the front support plate forming groove via the rear connecting rod, thereby enabling the rear support plate auxiliary forming plate to detach from the rear support plate while ejecting the product. The limiting plate 17 can limit the front connecting rod and the rear connecting rod. When the top plate moves upward, the front connecting rod can slide in the first connecting groove on the first connecting seat, and the rear connecting rod can slide in the second connecting groove on the second connecting seat.

[0038] The reinforcing rib forming groove 22 can form several reinforcing ribs with triangular cross sections on the rear support plate to further improve the strength of the rear support plate. The modular side inserts can be replaced, and by replacing the modular side inserts, the purpose of quickly producing products with different rear chair leg structures can be achieved.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0040] Although this article frequently uses terms such as upper template 1, lower template 2, backrest forming part 3, seat forming part 4, front leg forming part 5, rear leg forming part 6, modular quick-interchange structure 7, seat support plate forming structure 8, front support plate forming groove 9, rear support plate forming groove 10, front support plate auxiliary forming plate 11, rear support plate auxiliary forming plate 12, reinforcing rib forming groove 13, front connecting rod 14, top plate 15, rear connecting rod 16, limiting plate 17, first connecting seat 18, first connecting slide 19, second connecting seat 20, second connecting slide 21, reinforcing rib plate forming groove 22, modular insert mounting groove 23, modular side insert 24, etc., these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A novel modular quick-change mechanism for nap desks and chairs, comprising an upper template (1) and a lower template (2), characterized in that, A desk and chair forming cavity consisting of a chair back forming part (3), a chair seat forming part (4), a front chair leg forming part (5), and a rear chair leg forming part (6) is provided between the upper template (1) and the lower template (2). Modular quick-interchange structures (7) corresponding to the rear chair leg forming part (6) are provided on both sides of the lower template (2). A chair seat support plate forming structure (8) is also provided at the chair seat forming part (4).

2. The novel modular quick-change mechanism for nap desks and chairs according to claim 1, characterized in that, The chair seat support plate forming structure (8) includes a front support plate forming groove (9) and a rear support plate forming groove (10) recessed inward at the bottom of the chair seat forming part (4) on the lower template (2), and the front support plate forming groove (9) and the rear support plate forming groove (10) are arranged in parallel.

3. The novel modular quick-change mechanism for nap desks and chairs according to claim 2, characterized in that, The front support plate forming groove (9) and the rear support plate forming groove (10) are respectively provided with a front support plate auxiliary forming plate (11) and a rear support plate auxiliary forming plate (12) on adjacent sides. At least two reinforcing rib forming grooves (13) are provided on the front support plate auxiliary forming plate (11) and the rear support plate auxiliary forming plate (12) respectively.

4. The novel modular quick-change mechanism for nap desks and chairs according to claim 3, characterized in that, The reinforcing rib forming groove (13) on the front support plate auxiliary forming plate (11) is located on the side of the front support plate auxiliary forming plate (11) close to the front support plate forming groove (9); the reinforcing rib forming groove (13) on the rear support plate auxiliary forming plate (12) is located on the side of the rear support plate auxiliary forming plate (12) close to the rear support plate forming groove (10).

5. The novel modular quick-interchange mechanism for nap desks and chairs according to claim 4, characterized in that, The bottom of the front support plate auxiliary forming plate (11) is fixedly connected to two front connecting rods (14). The front connecting rods (14) are connected to the top plate (15) located on the lower side of the lower template (2) through a first sliding connection structure. The bottom of the rear support plate auxiliary forming plate (12) is fixedly connected to two rear connecting rods (16). The rear connecting rods (16) are connected to the top plate (15) through a second sliding connection structure. The top of the front connecting rods (14) is inclined towards the side closer to the rear support plate forming groove (10), and the top of the rear connecting rods (16) is inclined towards the side closer to the front support plate forming groove (9).

6. The novel modular quick-interchange mechanism for nap desks and chairs according to claim 5, characterized in that, A limiting plate (17) is provided between the front connecting rod (14) and the rear connecting rod (16) located on the same side. The limiting plate (17) is fixed to the bottom of the lower template (2). The front connecting rod (14) and the rear connecting rod (16) pass through the limiting plate (17) and are slidably connected to the limiting plate (17).

7. The novel modular quick-interchange mechanism for nap desks and chairs according to claim 5, characterized in that, The first sliding connection structure includes a first connecting seat (18) fixed on the top plate (15). The first connecting seat (18) is recessed inward and has a first connecting groove (19) with a T-shaped cross section. The bottom end of the front connecting rod (14) has a T-shaped cross section and is slidably connected to the first connecting groove (19).

8. The novel modular quick-interchange mechanism for nap desks and chairs according to claim 7, characterized in that, The second sliding connection structure includes a second connecting seat (20) fixed on the top plate (15). The second connecting seat (20) is recessed inward and has a second connecting groove (21) with a T-shaped cross section. The bottom end of the rear connecting rod (16) has a T-shaped cross section and is slidably connected to the second connecting groove (21).

9. The novel modular quick-change mechanism for nap desks and chairs according to claim 5, characterized in that, The rear support plate forming groove (10) is further provided with a reinforcing rib forming groove (22) with a triangular cross section on the side away from the rear support plate auxiliary forming plate (12).

10. The novel modular quick-change mechanism for nap desks and chairs according to claim 1, characterized in that, The modular quick-interchange structure (7) includes a modular side insert (24) that is slidably disposed in a modular insert mounting groove (23) on the side of the lower template (2). The inner side of the modular side insert (24) is connected to the rear chair leg forming part (6), and the top of the modular side insert (24) is detachably fixed on the upper template (1).

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