Mould with in-and-out tooth structure

Abstract

The present invention discloses a mold with a tooth advancing and retreating structure, comprising a fixed template, a movable template, a motor seat, a tooth retreating motor, a gear set, a fixed transmission sleeve, an inner core, a tooth core, and a movable outer core; the motor seat is fixed on the outer wall of the movable template, the tooth retreating motor is installed on the motor seat, the output shaft of the tooth retreating motor drives the fixed transmission sleeve to rotate through the gear set, the lower end of the inner core is fixedly inserted in the fixed transmission sleeve, the tooth core is movably sleeved on the inner core, the lower part of the tooth core is inserted into the fixed transmission sleeve, there is a stop between the lower part of the tooth core and the fixed transmission sleeve, the movable outer core is sleeved on the tooth core in a gap, and the lower part of the movable outer core is connected to the fixed transmission sleeve through a screw thread. Since the tooth retreating motor of the present invention drives the fixed transmission sleeve to rotate through the gear set, the rotation of the fixed transmission sleeve drives the tooth core to rotate and the movable outer core to move downward, so that the tooth core is disengaged from the screw thread on the product, and the movable outer core is disengaged from the D-shaped inner hole on the plastic product, and the tooth and hole removal process is stable and reliable.

Description

Technical Field

[0001] The invention relates to an injection mold, in particular to a mold with an advance and retreat tooth structure. Background Art

[0002] Plastic injection molds are tools for producing plastic products and are widely used. Figure 1 As shown, the plastic product 100 has an inner hole 101 with screw threads and the end of the inner hole is D-shaped. Therefore, it is necessary to design a demoulding mechanism that can both remove the threads and remove the D-shaped hole. Summary of the invention

[0003] The object of the present invention is to provide a mold with a tooth advancement and retreating structure, which can ensure stable and reliable tooth removal and hole removal processes.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] The present invention discloses a mold with a tooth advancing and retreating structure, comprising a fixed mold plate, a movable mold plate, a motor seat, a tooth retreating motor, a gear set, a fixed transmission sleeve, an inner core, a tooth core, and a movable outer core; the fixed mold plate and the movable mold plate are close together, the motor seat is fixed on the outer wall of the movable mold plate, the tooth retreating motor is installed on the motor seat, the output shaft of the tooth retreating motor is meshed with the gear on the fixed transmission sleeve through the gear set, driving the fixed transmission sleeve to rotate, and the fixed transmission sleeve is rotatably installed in the movable mold plate through a bearing; the lower end of the inner core is fixedly inserted in the fixed transmission sleeve, the upper end of the inner core extends into the mold cavity, the tooth core is movably sleeved on the inner core, the lower part of the tooth core is inserted into the fixed transmission sleeve, a rotation stop is provided between the lower part of the tooth core and the fixed transmission sleeve, the upper part of the tooth core extends into the mold cavity, the movable outer core is gap-sleeved on the tooth core, the upper part of the movable outer core extends into the mold cavity, the lower part of the movable outer core is sleeved in the fixed transmission sleeve, and the movable outer core is connected to the fixed transmission sleeve through screw threads.

[0006] The top of the core has threads around the entire circumference.

[0007] The cross section of the rotation-stopping position at the lower part of the tooth core is D-shaped.

[0008] The inclined wedge block is fixed on the fixed template and the inner side of the inclined wedge block presses on the inclined surface outside the slider. The slider is slidably connected to the movable template. The upper end of the inclined guide column is fixed on the fixed template, and the lower part of the inclined guide column is movably inserted into the inclined guide column hole of the slider.

[0009] The inner side of the inclined guide post is composed of a vertical surface and an inclined surface, the groove wall of the inclined guide post hole of the slider is composed of an inclined surface and a vertical surface, and the inner side of the inclined guide post matches the groove wall of the inclined guide post hole.

[0010] After adopting the above scheme, since the present invention includes a fixed template, a movable template, a motor seat, a tooth-removing motor, a gear set, a fixed transmission sleeve, an inner core, a tooth core, and a movable outer core, the tooth-removing motor drives the fixed transmission sleeve to rotate through the gear set, and the tooth core connected to the fixed transmission sleeve rotates, so that the tooth core is disengaged from the screw thread on the plastic product. At the same time, the movable outer core inserted into the inner hole of the fixed transmission sleeve is connected through the screw thread, and the fixed transmission sleeve rotates to drive the movable outer core to move downward, so that the movable outer core is disengaged from the D-shaped inner hole on the plastic product. The tooth-removing and hole-removing processes are stable and reliable.

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric view of a plastic product;

[0013] Figure 2 is a cross-sectional view of the present invention;

[0014] Figure 3 It is a cross-sectional view of the inner core, tooth core, and movable outer core of the present invention;

[0015] Figure 4 It is a perspective view of the inner core, tooth core and movable outer core of the present invention;

[0016] Figure 5 It is an axonometric diagram of the inner core, tooth core, movable outer core and fixed transmission sleeve of the present invention;

[0017] Figure 6 It is a three-dimensional exploded view of the inner core, tooth core, movable outer core and fixed transmission sleeve of the present invention;

[0018] Figure 7 It is a cross-sectional view of the inner core, tooth core and fixed transmission sleeve of the present invention. DETAILED DESCRIPTION

[0019] like Figure 2-Figure 4 As shown, the present invention is a mold with an advance and retreat tooth structure, including a fixed mold plate 1, a movable mold plate 2, a motor seat 3, a retreat tooth motor 4, a gear set 5, a fixed transmission sleeve 6, an inner core 7, a tooth core 8, a movable outer core 9, a bearing 10, an inclined guide column 11, a slider 12, and an inclined wedge block 13.

[0020] The fixed template 1 and the movable template 2 are close together, the motor seat 3 is fixed on the outer wall of the movable template 2, the tooth-removing motor 4 is installed on the motor seat 3, and the output shaft of the tooth-removing motor 4 is meshed with the gear 61 on the fixed transmission sleeve 6 through the gear set 5 to drive the fixed transmission sleeve 6 to rotate, and the fixed transmission sleeve 6 is rotatably installed in the movable template 2 through the bearing 10; the lower end of the inner core 7 is fixedly inserted in the fixed transmission sleeve 6, the upper end of the inner core 7 extends into the cavity, the tooth core 8 is movably sleeved on the inner core 7, the lower part of the tooth core 8 is inserted into the fixed transmission sleeve 6, and there is a stop 81 between the lower part of the tooth core 8 and the fixed transmission sleeve 6, so that the cross-section of the lower part of the tooth core 8 is D-shaped, the upper part of the tooth core 8 extends into the cavity, the movable outer core 9 is sleeved on the tooth core 8, and the top of the tooth core 8 has a thread 82 around the entire circumference; the upper part of the movable outer core 9 extends into the cavity, the lower part of the movable outer core 9 is sleeved in the fixed transmission sleeve 6, and the movable outer core 9 is connected to the fixed transmission sleeve 6 through a screw thread 91.

[0021] The inclined wedge block 13 is fixed on the fixed template 1 and the inner side of the inclined wedge block 13 is pressed against the inclined surface of the outer side of the slider 12. The slider 12 is slidably connected to the movable template 2. The upper end of the inclined guide column 11 is fixed on the fixed template 1, and the lower part of the inclined guide column 11 is movably inserted into the inclined guide column hole 121 of the slider 12.

[0022] Working principle of the present invention:

[0023] When the mold is opened, the tooth-removing motor 4 drives the fixed transmission sleeve 6 to rotate through the gear set 5, and the inner core 7 connected to the fixed transmission sleeve 6 rotates, and the tooth core 8 inserted in the inner hole of the fixed transmission sleeve 6 rotates synchronously with the fixed transmission sleeve 6, and the tooth core 8 can move axially, so that the tooth core 8 completes the tooth-reaming action and removes the plastic product 100 (such as Figure 1 The threaded core 8 moves downward while stripping the thread, and the movable outer core 9 is screwed with the fixed transmission sleeve 6 by the threaded thread 91. When the fixed transmission sleeve 6 rotates, it can drive the movable outer core 9 to move downward, so that the movable outer core 9 is stripped out of the D-shaped inner hole on the plastic product 100, and the thread stripping and hole stripping are completed at the same time. After the mold is opened for a certain distance, the inclined guide column 11 drives the slider 12 to move outward, so that the inner end of the slider 12 is separated from the side hole 103 (as shown in FIG. 103 ) on the plastic product 100. Figure 1 as shown).

[0024] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A mold with an advance and retreat tooth structure, characterized in that: It includes a fixed die plate, a movable die plate, a motor seat, a tooth-reducing motor, a gear set, a fixed transmission sleeve, an inner core, a tooth core, and a movable outer core; The fixed template and the movable template are close together, the motor seat is fixed on the outer wall of the movable template, the tooth-retracting motor is installed on the motor seat, the output shaft of the tooth-retracting motor is meshed with the gear on the fixed transmission sleeve through the gear set, driving the fixed transmission sleeve to rotate, and the fixed transmission sleeve is rotatably installed in the movable template through the bearing; the lower end of the inner core is fixedly inserted in the fixed transmission sleeve, the upper end of the inner core extends into the cavity, the tooth core is movably sleeved on the inner core, the lower part of the tooth core is inserted into the fixed transmission sleeve, and there is a stop between the lower part of the tooth core and the fixed transmission sleeve, the upper part of the tooth core extends into the cavity, the movable outer core is gap-sleeved on the tooth core, the upper part of the movable outer core extends into the cavity, the lower part of the movable outer core is sleeved in the fixed transmission sleeve, and the movable outer core and the fixed transmission sleeve are connected by screw threads; The top of the tooth core has a thread surrounding the entire circumference; the cross-section of the stop position at the bottom of the tooth core is D-shaped.

2. The mold with an advancing and retreating tooth structure according to claim 1, characterized in that: It also includes an inclined wedge block, which is fixed on the fixed template and the inner side of the inclined wedge block presses on the inclined surface on the outer side of the slider. The slider is slidably connected to the movable template. The upper end of the inclined guide column is fixed on the fixed template, and the lower part of the inclined guide column is movably inserted into the inclined guide column hole of the slider.

3. The mold with an advance and retreat tooth structure according to claim 2, characterized in that: The inner side of the inclined guide post is composed of a vertical surface and an inclined surface, the groove wall of the inclined guide post hole of the slider is composed of an inclined surface and a vertical surface, and the inner side of the inclined guide post matches the groove wall of the inclined guide post hole.

Images