A bidirectional core-pulling mechanism based on a combination of a slider and a bent pin

Abstract

The present invention provides a bidirectional core-pulling mechanism based on a combination of sliders and bent pins, comprising a movable platen, a fixed platen, a first core-pulling assembly, and a second core-pulling assembly. The first core-pulling assembly comprises a first bent pin and a first slider, and the second core-pulling assembly comprises a second bent pin and a second slider. The first slider can move along a first core-pulling direction with the movement of the first bent pin, and the second slider can move along a second core-pulling direction with the movement of the second bent pin. The present invention adopts a mosaic structure of the first core-pulling assembly and the second core-pulling assembly, and utilizes the cooperation of the bent pins and sliders to successively realize core-pulling molding in two different directions: lateral core-pulling of the oblique hole screw column of the air conditioner base and lateral core-pulling of the base buckle. The overall structure is simple, easy to disassemble and replace, and also reduces mold costs and shortens the processing cycle.

Description

Technical Field

[0001] The present invention relates to the technical field of mold core pulling, in particular to a bidirectional core pulling mechanism based on a combination of a slider and a bent pin. Background Art

[0002] To meet the diverse product functions, structural requirements, and assembly demands of different workpieces, the structures of plastic products are becoming increasingly complex, with an increasing number of holes, grooves, and protrusions being designed. These structures often require core-pulling mechanisms to be designed into their molds.

[0003] Taking the air conditioner base as an example, the lateral core pulling mechanism in the existing technology mainly adopts a mechanism combining a slider and an inclined guide column. However, because a set of inclined guide column lateral core pulling can only realize lateral core pulling in a certain direction, if two-way core pulling is to be realized, two sets of sliders combined with inclined guide columns are required to be set up. The lateral core pulling mechanism makes the mold development cost high and affects the manufacturing and assembly of the mold. On the other hand, the molding position of the air conditioner base buckle is relatively deep, and the traditional slider and inclined guide column combination mechanism is difficult to enter this position, and the buckle core pulling molding is more difficult. Summary of the Invention

[0004] The problem solved by the present invention is that the core pulling mechanism in the prior art has multiple core pulling directions, which leads to difficulty in core pulling, high processing cost and long manufacturing cycle.

[0005] To solve the above problems, the present invention provides a bidirectional core pulling mechanism based on a combination of a slider and a bent pin, including a movable template, a fixed template, a first core pulling assembly and a second core pulling assembly, the first core pulling assembly including a first bent pin and a first slider, the second core pulling assembly including a second bent pin and a second slider, the first slider can move along the first core pulling direction with the movement of the first bent pin, and the second slider can move along the second core pulling direction with the movement of the second bent pin.

[0006] After adopting the above structure, the present invention has the following advantages compared with the prior art: the inlaid structure of the first core-pulling component and the second core-pulling component adopted in the present invention, by utilizing the cooperation of the bent pin and the slider, can successively realize the core pulling forming in two different directions: lateral core pulling of the oblique hole screw column of the air conditioner base and lateral core pulling of the base buckle. The overall structure is simple, easy to disassemble and replace, which also reduces mold costs and shortens the processing cycle.

[0007] Furthermore, the first core pulling assembly also includes a slider base for supporting the sliding of the first slider, and the slider base is fixed on the movable template; the above arrangement enables the slider to move along the slider base.

[0008] Furthermore, the extending direction of the connecting surface between the first slider and the slider base is the first core-pulling direction; the above arrangement enables the first slider to move along the first core-pulling direction.

[0009] Furthermore, a first guide groove is provided in the first slider, and a second guide groove is provided in the slider base; the guide grooves are provided so that the first bending pin can move therein.

[0010] Furthermore, the first bending pin includes a straight column and an inclined column bent toward the first core-pulling direction, one end of the straight column is fixed on the fixed template, the other end of the straight column is inserted into the first guide groove, and the inclined column is inserted into the second guide groove; the above arrangement enables the movement of the first bending pin to drive the movement of the first slider.

[0011] Furthermore, the right side wall of the first guide groove has a guide section parallel to the extension direction of the inclined column; the above arrangement ensures that there is no gap in the contact surface when the first bent pin drives the first slider to move, and the movement efficiency is high and the friction is small.

[0012] Furthermore, the second core pulling assembly also includes a slider guide column connected to the second slider and extending toward the second bending pin, and the extension direction of the slider guide column is the second core pulling direction; the above arrangement can realize core pulling forming of the structure deep in the cavity.

[0013] Furthermore, a groove is provided at one end of the slider guide column close to the second bend pin, one end of the second bend pin is fixed on the fixed template, and the other end is inserted into the groove; the above arrangement can realize the locking effect of the second bend pin on the slider guide column in the mold closing state.

[0014] Furthermore, a guide column base is provided below the groove, and a first guide block is provided above the groove. The guide column base and the first guide block are fixed relative to the movable template when the movable template moves; the guide column base and the first guide block are provided to limit the displacement of the second bending pin in the vertical direction.

[0015] Furthermore, a second guide block is provided on the slider guide column, the second guide block is fixed on the movable template, and the second guide block is located on the left side of the groove; the second guide block is provided to realize the guiding effect of the slider guide column in the second core pulling direction.

[0016] Furthermore, a spring groove with an opening toward the groove is provided in the second guide block, a spring is provided in the spring groove, a spring limit block is provided on the right side of the spring, and the spring limit block is fixed on the slider guide column; the spring can provide a driving force for the movement of the slider guide column.

[0017] Furthermore, when the second core pulling assembly is in the mold closing state, the spring is in a compressed state; the above arrangement enables the spring to exert a thrust on the spring limit block when the movable template moves, thereby pushing the slider guide column to move.

[0018] Furthermore, a guide post limiting plate is provided at the right end of the guide post base; the guide post limiting plate can be used to limit the movement distance of the slider guide post. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an air-conditioning chassis in an embodiment of the present invention;

[0020] Figure 2 It is a cross-sectional view of the two-way core pulling mechanism in the mold closing state according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the bidirectional core-pulling mechanism in the mold-opening state according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the bidirectional core-pulling mechanism in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the exploded structure of the second core pulling assembly in an embodiment of the present invention;

[0024] 110-first bent pin; 111-first bent pin screw; 120-first slider; 121-first guide groove; 122-guide section; 130-slider base; 131-second guide groove; 140-wear-resistant block; 150-first slider limit block; 210-second bent pin; 211-first bent pin screw; 220-second slider; 221-second slider screw; 230-slider guide column; 231-groove; 240-guide column base; 250-first guide block; 260-second guide block; 261-spring; 270-spring limit block; 280-guide column limit plate; 290-third guide block; 300-movable template; 400-fixed template; 500-base; 510-base buckle; 520-middle frame fixing screw hole. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] The embodiment of the present invention discloses a two-way core pulling mechanism for demoulding the air conditioner hanging base 500. Figure 1 As shown, the base 500 includes a middle frame fixing screw hole 520 and a base buckle 510. The demoulding directions of these two structures are inconsistent, and the molding position of the base buckle 510 is deeper.

[0027] like Figure 2-3As shown, an embodiment of the present invention discloses a bidirectional core pulling mechanism, comprising a movable plate 300, a fixed plate 400, a first core pulling assembly and a second core pulling assembly, wherein the movable plate 300 is located below the fixed plate 400, and the first core pulling assembly and the second core pulling assembly are located between the movable plate 300 and the fixed plate 400.

[0028] Specifically, the first core pulling assembly includes a first bent pin 110 and a first slider 120, and the second core pulling assembly 200 includes a second bent pin 210 and a second slider 220. In the mold closing state, one end of the first slider 110 is connected to the middle frame fixing screw hole 520, and one end of the second slider is connected to the base buckle 510; the first slider 120 can move along the first core pulling direction with the movement of the first bent pin 110, and the second slider 220 can move along the second core pulling direction with the movement of the second bent pin 210.

[0029] Preferably, the first core pulling assembly further includes a slider base 130 for supporting the first slider 120 . The slider base 130 is fixed to the movable plate 300 via fasteners, and the slider 120 can slide on the slider base 130 .

[0030] Preferably, the extending direction of the connecting surface between the first slider 120 and the slider base 130 is the first core-pulling direction, so that the sliding direction of the first slider 120 is the first core-pulling direction.

[0031] Preferably, a first guide groove 121 is provided in the first slider 120, and a second guide groove 131 is provided in the slider base 130. The first guide groove 121 and the second guide groove 122 are used to accommodate the first bending pin 110 and realize the movement of the first bending pin 110 to drive the movement of the first slider 120.

[0032] Specifically, as shown in the figure, the first bending pin 110 includes a straight column and an oblique column at a certain angle to the straight column, and the oblique column is bent toward the first core-pulling direction. The straight column is the portion of the first bending pin 110 extending along the Z-direction; one end of the straight column is fixed to the fixed template 400 by a first bending pin screw 111, and the other end of the straight column 111 is inserted into the first guide groove 121, and the oblique column is completely inserted into the second guide groove 131.

[0033] Preferably, the right side wall of the first guide groove 121 has a guide section 122 parallel to the extension direction of the inclined column 112. The right side wall of the first guide groove 121 refers to the right side wall of the first guide groove 121 along the first core-pulling direction. The above setting ensures that when the first bent pin drives the first slider to move, there is no gap in the contact surface between the two, and the movement efficiency is high and the friction is small.

[0034] In addition, if Figure 4 As shown, a first slider stopper 150 is fixed to the slider base 130. The first slider stopper 150 is used to limit the front-to-back movement of the first slider 120 on the slider base 130. It should be noted that the front-to-back direction referred to here is perpendicular to both the left-right direction (the left-to-right direction along the second core-pulling direction) and the up-down direction (Z- and Z+). A wear-resistant block 140 is provided on the outside of the first slider 120 to reduce friction between the fixed plate 400 and the first slider 120.

[0035] Specifically, the mold opening movement process of the first core pulling assembly is as follows:

[0036] The movable template 300 moves in the Z+ direction, and the fixed template 400 moves in the Z- direction relative to the movable template 300. At this time, the fixed template 400 drives the first bent pin 110 fixed thereon to move in the Z- direction relative to the slider base 130 and the first slider 120. The first bent pin 110 slowly disengages from the second guide groove 131 until the inclined column of the first bent pin 110 fits with the guide section 122 in the first guide groove 121. At this time, the first bent pin 110 continues to move along the Z- direction to drive the first slider 120 to move along the slider base 130 in the first core-pulling direction, thereby completing the core-pulling forming of the middle frame fixing screw hole 520.

[0037] See further Figure 2-5 The second core pulling assembly also includes a slider guide column 230 connected to the second slider 220 and extending toward the second bending pin 210. The slider guide column 230 is connected to the second slider 220 through a second slider screw 221; the extension direction of the slider guide column 230 is the second core pulling direction, and the setting of the slider guide column 230 can realize the core pulling forming of the structure deep in the inner cavity of the core pulling mechanism.

[0038] Preferably, a groove 231 is provided at one end of the slider guide column 230 close to the second bend pin 210, one end of the second bend pin 210 is fixed to the fixed template 400 by a second slider screw 221, and the other end is inserted into the groove 231. The above arrangement can realize the locking effect of the second bend pin 210 on the slider guide column 230 in the mold closing state.

[0039] Preferably, a guide column base 240 is provided below the groove 231 of the slider guide column 230, and a first guide block 250 is provided above the groove 231 of the slider guide column 230, wherein the guide column base 240 is fixed on the movable template 300, for limiting the vertical displacement of the second bending pin 210; the first guide block 250 is fixed on the slider base 130, for realizing the guiding effect of the second bending pin 210 in the vertical direction; and the slider base 130 is fixed on the movable template 300, therefore, the guide column base 240 and the first guide block 250 are fixed relative to the movable template 300 when the movable template moves.

[0040] Preferably, the slider guide column 230 is further provided with a second guide block 260 , which is fixed on the movable plate 300 , and the second guide block 260 can realize the guiding function of the slider guide column 230 in the second core-pulling direction.

[0041] Preferably, the second guide block 260 is located on the left side of the groove 231, and a spring slot is defined within the second guide block 260, opening toward the groove 231. A spring 261 is disposed within the spring slot, and a spring stopper 270 is abutted against the right side of the spring 261. The spring stopper 270 is fixed to the slider guide post 230. The spring 261 provides a driving force for the movement of the slider guide post 230 and also prevents direct collision between the spring stopper and the second guide block, thereby providing protection.

[0042] Preferably, when the second core pulling assembly is in the mold closing state, the spring 261 is in a compressed state, so that when the movable template 300 moves, the spring 261 can push the spring limit block 270 and then push the slider guide column 230 to move.

[0043] Preferably, a guide post limiting plate 280 is provided at the right end of the guide post base 240 , which can be used to limit the movement distance of the slider guide post 230 in the second core-pulling direction.

[0044] In addition, the slider guide column 230 is provided with a third guide block 290 near the second slider 220. This is because the slider guide column 230 is longer, and the third guide block 290 is used to cooperate with the second guide block 260 to jointly realize the guiding function of the slider guide column 230 in the second core pulling direction.

[0045] Specifically, the mold opening movement process of the second core pulling assembly is as follows:

[0046] The movable template 300 moves in the Z+ direction, and the fixed template 400 moves in the Z- direction relative to the movable template 300. At this time, the fixed template 400 drives the second bent pin 120 fixed thereon to move in the Z- direction relative to the slider guide column 230. The bottom end of the second bent pin 120 slowly escapes from the groove 231 of the guide column base 240 and the slider guide column 230. When the bottom end of the second bent pin 120 is higher than the upper surface of the slider guide column 230, the spring 261 in a compressed state pushes the spring limit block 270 to move along the second core-pulling direction, that is, pushes the slider guide column 230 to move along the second core-pulling direction. When the slider guide column 230 moves to the guide column limit plate 280, it stops moving, thereby completing the core-pulling molding of the base buckle 510.

[0047] As described above, the inlaid structure of the first core-pulling component and the second core-pulling component adopted in the present invention, by utilizing the cooperation of the bent pin and the slider, can successively realize the core-pulling forming in two different directions: lateral core pulling of the oblique hole screw column of the air-conditioning base and lateral core pulling of the base buckle. The overall structure is simple, easy to disassemble and replace, and also reduces mold costs and shortens the processing cycle.

[0048] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A bidirectional core pulling mechanism based on a combination of a slider and a bent pin, characterized in that: The invention comprises a movable plate (300), a fixed plate (400), a first core-pulling assembly and a second core-pulling assembly, wherein the first core-pulling assembly comprises a first bending pin (110) and a first slider (120), and the second core-pulling assembly (200) comprises a second bending pin (210) and a second slider (220), wherein the first slider (120) can move along a first core-pulling direction along with the movement of the first bending pin (110), and the second slider (220) can move along a second core-pulling direction along with the movement of the second bending pin (210); the first core-pulling direction is different from and not parallel to the second core-pulling direction; The first core pulling assembly further includes a slider base (130) for supporting the sliding of the first slider (120), and the slider base (130) is fixed on the movable plate (300); The extending direction of the connection surface between the first slider (120) and the slider base (130) is the first core-pulling direction; A first guide groove (121) is provided in the first slider (120), and a second guide groove (131) is provided in the slider base (130); The first bending pin (110) comprises a straight column and an oblique column (112) bent toward the first core-pulling direction, one end of the straight column is fixed to the fixed template (400), the other end of the straight column is inserted into the first guide groove (121), and the oblique column is inserted into the second guide groove (131); The left side wall of the first guide groove (121) has an inclined pushing section and an upright lower straight wall from top to bottom, and the right side wall of the first guide groove (121) has an upright upper straight wall and an inclined guiding section (122) from top to bottom, the pushing section and the guiding section (122) are both arranged parallel to the extension direction of the inclined column (112), and the upper straight wall and the lower straight wall are both arranged parallel to the extension direction of the straight column; the left side wall of the second guide groove has an inclined wall, and the right side wall of the second guide groove has an upright wall, the inclined wall is arranged parallel to the extension direction of the inclined column (112), and the upright wall is arranged parallel to the extension direction of the straight column; The second core-pulling assembly further comprises a slider guide post (230) connected to the second slider (220) and extending toward the second bending pin (210), wherein the extending direction of the slider guide post (230) is the second core-pulling direction; a groove (231) is provided at one end of the slider guide post (230) close to the second bending pin, one end of the second bending pin (210) is fixed to the fixed template (400), and the other end is inserted into the groove (231); a guide post base (240) is provided below the groove (231), and the groove (231) is provided at the bottom thereof. A first guide block (250) is provided above the groove (231); the guide column base (240) is fixed on the movable plate (300) and is used to limit the displacement of the second bent pin (210) in the vertical direction; the first guide block (250) is fixed on the slider base (130) and is used to guide the second bent pin (210) in the vertical direction; the guide column base (240) and the first guide block (250) are fixed relative to the movable plate (300) when the movable plate (300) moves; A second guide block (260) is provided on the slider guide column (230), the second guide block (260) is fixed on the movable plate, and the second guide block (260) is located on the left side of the groove (231); A spring groove is provided in the second guide block (260) with an opening facing the groove (231), a spring (261) is provided in the spring groove, a spring limiting block (270) is provided on the right side of the spring (261), and the spring limiting block (270) is fixed on the slider guide column (230); When the second core-pulling assembly is in a mold-closing state, the spring (261) is in a compressed state; A guide post limiting plate (280) is provided at the right end of the guide post base (240); A first slider limiting block (150) is fixed on the slider base (130), and the first slider limiting block (150) is used to limit the movement of the first slider (120) in the front-rear direction on the slider base (130).

Images