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CN-121973404-A - Plastic chair injection mold with many slider demoulding mechanism

CN121973404ACN 121973404 ACN121973404 ACN 121973404ACN-121973404-A

Abstract

The application relates to a plastic chair injection mold with a multi-slide block demolding mechanism, which comprises a core mold, a cavity mold, an ejection mechanism and two core pulling mechanisms. The first insert is arranged in the core mould in a sliding manner along the opening and closing direction, the base is fixedly arranged on the first insert, and the two core pulling mechanisms are arranged on the base and positioned on two sides of the first insert and are used for demolding the handrail and the corresponding chair legs. The mold further comprises a first driving piece and a second insert for forming the cover plate, the first insert is provided with a groove, the second insert is rotationally arranged in the groove, the first driving piece drives the first driving piece to rotate, and a plurality of pouring channels which are communicated with the cover plate and the seat forming cavity are circumferentially arranged on the second insert. The ejection mechanism is arranged on the base and can eject the plastic chair body and the cover plate. The plastic chair body and the cover plate are integrated into one set of die to be molded, the second insert is used for rotating, breaking and pouring materials are separated, and then ejection is synchronous, so that the number of dies is reduced, the die opening cost and the occupied space are reduced, and the production efficiency is improved.

Inventors

  • XIE CUNTI

Assignees

  • 台州苏克科技有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (8)

  1. 1. The plastic chair injection mold with the multi-slide block demolding mechanism is characterized by comprising a core mold (2), a cavity mold (3), an ejection mechanism (5) and two core pulling mechanisms (6) which are arranged on the core mold (2), wherein a first insert (21) for molding a chair seat (12) is slidably arranged in the core mold (2) along the mold opening and closing direction, a base (23) is fixedly arranged on the first insert (21), and the two core pulling mechanisms (6) are arranged on the base (23) and are respectively positioned at two sides of the first insert (21) and are used for demolding two armrests (13) and corresponding side chair legs (14); The novel plastic chair further comprises a first driving piece (41) and a second insert (42), wherein the second insert (42) is used for forming a cover plate (15), the first insert (21) is provided with a groove (211), the second insert (42) is rotationally arranged in the groove (211), the first driving piece (41) is used for driving the second insert (42) to rotate along an axis, a plurality of pouring channels (422) are sequentially arranged on the second insert (42) along the circumferential direction, two ends of the pouring channels (422) are respectively communicated with forming cavities where the cover plate (15) and the chair seat (12) are located, and the ejection mechanism (5) is arranged on the base (23) and used for ejecting the plastic chair body (1) and the cover plate (15).
  2. 2. The plastic chair injection mold with the multi-slide demolding mechanism according to claim 1, wherein the core pulling mechanism (6) comprises a driving piece II, a driving piece III, a driving piece IV, a main pulling block (61), a first pulling block (65), a forming limiting block (681) and a limiting piece, the main pulling block (61) is connected to the base (23) in a sliding mode along the core pulling direction, the main pulling block (61) is used for forming the connection position of a chair leg (14) and an armrest (13) and a chair back (11), the driving piece II is arranged on the main pulling block (61) and a core mold (2) and used for driving the main pulling block (61) to move along the mold opening and closing direction, the driving piece III is arranged on the main pulling block (61) and used for driving the first pulling block (65) to slide along the mold opening and closing direction, the forming limiting block (681) is used for forming the bending position of the armrest (13) along the core pulling direction, the main pulling block (13) is used for forming the seat (23), the forming limiting block (681) is used for connecting the main pulling block (61) along the base (23) in the direction parallel to the main pulling block (61) in the sliding mode along the direction, and the main pulling block (681) is used for limiting the main pulling block (13) to slide along the main pulling direction.
  3. 3. The plastic chair injection mold with the multi-slide demolding mechanism according to claim 2, wherein the driving piece I (41) comprises a gear (411) and two racks (412), a containing cavity (212) for containing the ejection mechanism (5) is formed in the first insert (21), a avoiding groove (213) for containing the gear (411) and the two racks (412) is formed in the bottom wall of the containing cavity (212), a rotating rod (421) is coaxially and integrally formed in the second insert (42), the rotating rod (421) is rotatably arranged in the first insert (21), one end, far away from the second insert (42), of the rotating rod (421) is fixedly connected with the gear (411) through a screw, the two racks (412) correspond to the two main drawing blocks (61) respectively, one end of each rack (412) is fixedly mounted on each main drawing block (61), the two racks (412) are slidingly connected onto the second insert (42) in a core pulling direction parallel to the main drawing blocks (61), and the two racks (412) are respectively located on two sides of the gear (411) and meshed with the gear (411).
  4. 4. The plastic chair injection mold with the multi-slide demolding mechanism, as set forth in claim 3, characterized in that the ejection mechanism (5) comprises a first oil cylinder (51), a top plate (52), a top piece of the chair seat (12) and a top piece of the cover plate (15), wherein the first oil cylinder (51) is fixedly arranged on the base (23), a piston rod of the first oil cylinder (51) extends into the accommodating cavity (212) and is fixedly connected with the top plate (52), the top piece of the chair seat (12) is arranged on the top plate (52) and is used for jacking the chair seat (12), the top piece of the cover plate (15) comprises a first top rod (53) and a first top block (54), one end of the first top rod (53) is fixedly connected to the top plate (52), the other end of the first top rod (53) is rotatably connected to the first top block (54), the first top rod (53) is arranged on the rotary rod (421) in a penetrating mode, and the first top block (54) is used for jacking the cover plate (15).
  5. 5. The plastic chair injection mold with the multi-slide demolding mechanism according to claim 2, wherein the driving member two-piece injection mold comprises a fixing plate (62), a second oil cylinder (63) and a fixing table (64), the fixing plate (62) is fixedly installed on a corresponding main drawing block (61), the fixing table (64) is fixedly installed on a core mold (2), the second oil cylinder (63) is fixedly installed on the fixing plate (62), and a piston rod of the second oil cylinder (63) is connected to the fixing table (64) in a sliding mode along a core pulling direction parallel to the main drawing block (61).
  6. 6. The plastic chair injection mold with the multi-slide demolding mechanism according to claim 2, wherein the driving piece three comprises a third oil cylinder (66) and a driving block (67), the third oil cylinder (66) is fixedly arranged on the main drawing block (61), a piston rod of the third oil cylinder (66) is fixedly arranged on the driving block (67), the driving block (67) is slidingly connected in the main drawing block (61) along a core pulling direction parallel to the main drawing block (61), the first drawing block (65) is slidingly connected on the main drawing block (61) along the core pulling direction, and the first drawing block (65) is slidingly connected with the driving block (67) along an inclined direction.
  7. 7. The plastic chair injection mold with the multi-slide demolding mechanism as claimed in claim 2, wherein the limiting piece comprises a positioning column (682) and a sliding block (683), the positioning column (682) is fixedly arranged on the core mold (2), the sliding block (683) is fixedly arranged on the molding limiting block (681), the sliding block (683) is slidingly connected to the positioning column (682) along the mold opening and closing direction, and a yielding groove (684) for accommodating the positioning column (682) and the sliding block (683) after the core pulling is formed in the main drawing block (61).
  8. 8. The plastic chair injection mold with the multi-slide demolding mechanism according to claim 5, wherein the driving piece IV comprises a fixed cover (69) and a fourth oil cylinder (691), the outer side surface of the main drawing block (61) opposite to the fixed plate (62) is provided with a mounting groove (611), the fixed cover (69) is positioned in the mounting groove (611) and fixedly arranged on the main drawing block (61), the fourth oil cylinder (691) is positioned in the fixed cover (69), the fourth oil cylinder (691) is fixedly arranged on the fixed plate (62), and a piston rod of the fourth oil cylinder (691) is fixedly arranged on the fixed cover (69).

Description

Plastic chair injection mold with many slider demoulding mechanism Technical Field The invention relates to the field of molds, in particular to a plastic chair injection mold with a multi-slide block demolding mechanism. Background The three collocation conditions of the plastic chair, the cover plate and the toilet bowl are shown in fig. 1, the plastic chair comprises a plastic chair body 1, the plastic chair body 1 comprises a chair back 11, a chair seat 12, two armrests 13 and four chair legs 14, through holes are formed in the chair seat 12, two metal reinforcing frames 19 are fixedly arranged below the chair seat 12 through screws, the reinforcing frames 19 not only can be used for supporting the chair seat 12 and improving the structural strength of the chair seat 12, but also are mounting brackets of the cover plate 15 and the toilet bowl 16. As shown in fig. 2 and 3, the reinforcing frame 19 is provided with a protruding block 17, the cover plate 15 and the toilet bowl 16 are provided with two concave grooves 18 matched with the two protruding blocks 17, and the cover plate 15 and the toilet bowl 16 can be quickly disassembled and replaced by clamping and matching the protruding blocks 17 and the concave grooves 18. Meanwhile, the cover plate 15 can also be directly matched with the toilet bowl 16 to serve as a toilet cover. When the cover plate is installed for use, the plastic chair is a chair with normal functions, and when the toilet is installed for use, the plastic chair can be converted into a toilet chair for people with inconvenient actions, old people, patients and the like, and a user can directly sit on the chair seat for toilet without bending down and squatting, so that the toilet difficulty of the people with inconvenient actions is effectively reduced, and the use safety and convenience are improved. When the plastic chair body, the matched cover plate and the toilet bowl are produced, three sets of independent injection molds are required to be correspondingly developed respectively, so that the mold development cost and the mold opening cost can be greatly increased, and more production sites and storage space can be occupied. Meanwhile, three sets of dies correspond to a plurality of independent production procedures, so that the production efficiency can be reduced. Disclosure of Invention In order to improve the production efficiency of plastic chairs, cover plates thereof and toilet bowl accessories, the application provides a plastic chair injection mold with a multi-slide block demolding mechanism. The application provides a plastic chair injection mold with a multi-slide block demoulding mechanism, which adopts the following technical scheme: The plastic chair injection mold with the multi-slide block demolding mechanism comprises a core mold, a cavity mold, an ejection mechanism and two core pulling mechanisms which are arranged on the core mold, wherein a first insert for molding a chair seat is slidingly arranged in the core mold along the mold opening and closing direction, the first insert is fixedly provided with a base, and the two core pulling mechanisms are arranged on the base and are respectively positioned at two sides of the first insert and used for demolding the two armrests and the corresponding side chair legs; The novel chair comprises a seat, a cover plate, a seat, a driving piece, a first insert, a second insert, a first insert and a second insert, wherein the first insert is used for forming the cover plate, the first insert is provided with a groove, the second insert is rotatably arranged in the groove, the first insert is driven by the driving piece to rotate along an axis, a plurality of pouring channels are sequentially formed in the second insert along the circumferential direction, and two ends of each pouring channel are respectively communicated with a forming cavity where the cover plate and the seat are positioned; the ejection mechanism is arranged on the base and is used for ejecting the plastic chair body and the cover plate. By adopting the technical scheme, the plastic chair body and the cover plate which are originally required to be respectively molded by two independent molds are integrated into one injection mold to finish production. The first insert is provided with a groove, the second insert for forming the cover plate is rotationally arranged, the first insert is driven to rotate by the first driving piece, the connecting pouring material between the cover plate and the plastic chair body is broken, the cover plate and the plastic chair body are separated, and the ejection mechanism ejects the cover plate and the plastic chair body synchronously. The number of the development of the molds is effectively reduced, the mold opening cost and the occupation of production sites are reduced, and meanwhile, the production efficiency of the plastic chair and accessories thereof is remarkably improved through the integration procedure. Th