Sliding block secondary demolding mechanism of injection mold

Abstract

The utility model relates to a slide block secondary demolding mechanism of an injection mold, which is mounted on a rear mold and comprises a slide block, a slide block seat, an outer mold core, an inner mold core, a buckling machine, a buckling machine elastic block, a reset spring, a slide block guide rail and a rear mold core, the rear mold core is arranged on the rear mold, the sliding block is in transmission connection with the outer mold core, the sliding block seat is in transmission connection with the inner mold core, the sliding block is located on the side, close to the rear mold core, of the sliding block seat, and the sliding block and the sliding block seat are connected through a limiting screw, so that the sliding block seat has a first stroke relative to the sliding block; the sliding block guide rail is mounted on the rear mold; the sliding block and the sliding block seat are arranged on the rear mold and the sliding block guide rail in a sliding manner; the buckling machine is connected below the sliding block seat and can move together with the sliding block seat, the buckling machine elastic block is arranged on the side, close to the sliding block, below the sliding block seat, the sliding block is prevented from moving away from the rear mold core from the sliding block seat side under the support of the reset spring, and the buckling machine can press the buckling machine elastic block downwards so that the sliding block can move away from the rear mold core. The slide block secondary demolding mechanism of the injection mold can prevent a product from being strained, scratched and snapped.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to a demoulding mechanism for secondary core pulling of a slider of a pipe injection mold. Background Art

[0002] PVDF is a polymer injection molding material. Compared with other plastic materials, its product density is high. Its density is 1.78 g / m3, which is a high-density polymer. The product has strong adhesion and is difficult to demold. The product is easily damaged during the demolding process. For example, the density of conventional injection molding material ABS is only 1.1 g / m3, the product has low adhesion, demolding is relatively easy, and the appearance of the product is not easily damaged, and there is no scratching or pulling. For the special injection molding material of PVDF, special requirements are put forward for the structure of the mold slider. A new slider structure is needed to solve the problem of PVDF product damage. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a secondary demoulding mechanism of a slider of an injection mold which can prevent the product from being scratched, scratched or broken.

[0004] The technical solution to achieve the purpose of the utility model is to provide a slider secondary demolding mechanism for an injection mold, which is installed on the rear mold and includes a slider, a slider seat, an outer core, an inner core, a buckle machine, a buckle machine spring block, a reset spring, a slider guide rail and a rear mold core; the rear mold core is arranged on the rear mold, the slider is transmission-connected to the outer core, the slider seat is transmission-connected to the inner core, the slider is located on the side of the slider seat near the rear mold core, the slider and the slider seat are connected by a limit screw so that the slider seat has a first stroke relative to the slider; the slider guide rail is installed on the rear mold, and the slider and the slider seat are slidingly arranged on the rear mold and the slider guide rail; the buckle machine is connected to the bottom of the slider seat and can move with the slider seat, the buckle machine spring block is arranged on the bottom of the slider seat near the slider side, and with the support of the reset spring, it blocks the slider from moving away from the rear mold core from the slider seat side, and the buckle machine can press down the buckle machine spring block so that the slider can move away from the rear mold core.

[0005] Furthermore, the secondary demolding mechanism of the slider of the injection mold also includes a machine screw; a spring block groove opening downward is provided on the side of the near-rear mold core of the machine, and the left and right ends of the spring block groove are inclined, and the lower end of the machine near the rear mold core is also inclined, and two screw connecting holes are provided on the far-rear mold core side of the machine, and a slider seat connecting key is provided on the upper end of the far-rear mold core side of the machine; two slider connecting keys arranged front and back are provided on the upper end of the machine spring block, and the left end of the slider connecting key is inclined with the left lower and the right higher, and a machine hole that passes through from left to right and opens upward is provided between the two slider connecting keys, and the left and right ends of the lower part of the machine hole are arranged to align with the left and right ends of the spring block groove of the machine. The corresponding inclined shape, the lower end of the trigger spring block is provided with two return spring grooves arranged front and back; the trigger is inserted into the corresponding trigger connecting groove provided at the bottom of the slider seat by its slider seat connecting key, and is located in the lower center of the slider seat, and is screwed and connected to the slider seat after two fasteners pass through the corresponding screw connecting holes of the trigger; the trigger spring block is inserted into the corresponding spring block connecting groove opened downward and rightward at the lower end of the slider seat near the side edge of the rear mold core by its two slider connecting keys, and is located in the lower center of the slider seat, the two return springs are respectively arranged in the return spring grooves of the corresponding trigger spring blocks, and the trigger spring block and the return spring limit are set in the corresponding limit grooves of the rear mold.

[0006] Furthermore, the secondary demolding mechanism of the slider of the injection mold also includes a cylinder fixing plate, a cylinder and a pressure strip; the slider guide rail is a guide rail base opening upward; the slider guide rail is installed on the rear mold through fasteners; the cylinder fixing plate is provided with an output shaft limiting groove opening upward in a U shape, and the cylinder fixing plate is installed on the end of the slider guide rail away from the rear mold through fasteners; the rear mold core is installed on the rear mold through fasteners; the pressure strip is installed on the upper end surfaces of the front and rear ends of the slider guide rail through fasteners; the cylinder is installed on the cylinder fixing plate through fasteners, and the power output shaft of the cylinder passes through the output shaft limiting groove of the cylinder fixing plate and is connected to the keyway of the slider seat; the outer core of the product is installed in the slider and is connected to the slider for axial movement together, and the inner core is connected to the slider seat for axial movement together.

[0007] Furthermore, the secondary demolding mechanism of the slider of the injection mold also includes an outer core connecting plate and an inner core connecting plate; the outer core is inserted into the slider and embedded in the connection, and then axially limited by the outer core connecting plate, and the outer core connecting plate is connected to the slider through fasteners; the inner core is inserted into the side of the slider seat near the rear mold core and is covered with the inner core connecting plate, the inner core is embedded in the inner core connecting plate and connected, and the inner core connecting plate is connected to the slider seat through fasteners.

[0008] Furthermore, the slider secondary demoulding mechanism of the injection mold further includes a slider water channel joint; the slider water channel joint is installed on the slider seat and is connected to the cooling water channel in the slider seat.

[0009] The utility model has positive effects: the utility model solves the problem of product damage, scratching and breaking caused by excessive adhesion of product materials by a slider secondary demoulding mechanism of a slider of the utility model. The slider is divided into two parts, namely a slider and a slider seat. The outer core on the slider contains the outer glue of the pipe fitting product, and it is connected to the slider seat by a limit screw; the inner core on the slider seat is inserted and matched with the outer core, and more than 80% of the adhesion of the product is concentrated on this insert, and the connection between the inner core and the slider seat is fixed by screws. The secondary demoulding action of the slider is realized by a buckle machine, which is installed at the bottom of the slider seat and fixed on the slider seat with screws. A buckle machine spring block is installed at the bottom of the buckle machine. In the mold closing state, the buckle machine spring block is pushed by the reset spring and stuck between the slider and the slider seat. When the mold is opened, the oil cylinder pulls the slider seat to move backward, and at the same time drives the inner core on the slider seat; because the buckle machine spring block is stuck on the slider, the slider does not move, and the outer core on the slider does not move either. In this way, the tensile force of the inner and outer wall cores of the product is decomposed, and the one-time tensile force is divided into two times. First, the outer core of the outer wall is pulled open, and then the inner core of the inner wall is pulled open. The products manufactured in this way will not have problems such as pulling, scratching, and breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A structural schematic diagram (top view) of a slider secondary demoulding mechanism of an injection mold of the utility model;

[0011] Figure 2 for Figure 1 AA surface section view;

[0012] Figure 3 It is a three-dimensional enlarged structural schematic diagram of the trigger and the trigger spring block;

[0013] Figure 4 This is a reference diagram of a usage state of a slider secondary demoulding mechanism of an injection mold of the utility model.

[0014] The markings in the above drawings are as follows:

[0015] Slider 1, slider seat 2, cylinder fixing plate 3, cylinder 4, pressure strip 5, outer core connecting plate 6, outer core 7, inner core 8, inner core connecting plate 9, locking machine 10, slider seat connecting key 10-1, locking machine spring block 11-1, slider connecting key 11-1-1, return spring 11-2, locking machine screw 12, slider guide rail 13, slider water channel joint 14, rear mold core 15, rear mold 16, product 17. DETAILED DESCRIPTION

[0016] (Example 1)

[0017] See Figure 1 and Figure 2The secondary demolding mechanism of a slider of an injection mold of the present embodiment includes a slider 1, a slider seat 2, a cylinder fixing plate 3, a cylinder 4, a pressure strip 5, an outer core connecting plate 6, an outer core 7, an inner core 8, an inner core connecting plate 9, a locking machine 10, a locking machine spring block 11-1, a return spring 11-2, a locking machine screw 12, a slider guide rail 13, a slider water channel joint 14 and a rear mold core 15.

[0018] The slider guide rail 13 is a guide rail base with an opening facing upward, and is a carrier for the movement of the slider, guiding the movement of the slider; the slider guide rail 13 is mounted on the rear mold 16 by fasteners. The oil cylinder fixing plate 3 is provided with a U-shaped output shaft limiting groove opening upward, and the oil cylinder fixing plate 3 is mounted on the end of the slider guide rail 13 away from the rear mold by fasteners. The rear mold core 15 is provided with a product cavity corresponding to the shape of the lower half of the corresponding manufactured product, and the rear mold core 15 is mounted on the rear mold 16 by fasteners. The pressure strip 9 is mounted on the upper end surfaces of the front and rear ends of the slider guide rail 13 by fasteners, and plays the role of limiting the slider seat 2 and the slider 1. The oil groove is processed on it, and it also plays the role of lubricating the slider 1 and the slider seat 2. The cylinder 4 is mounted on the cylinder fixing plate 3 by fasteners. The power output shaft of the cylinder 4 passes through the output shaft limiting groove of the cylinder fixing plate 3 and is connected to the keyway of the slider seat 2. The slider 1 and the slider seat 2 are both arranged above the slider guide rail 13 and the rear mold 16, and the slider 1 is located on the side of the slider seat 2 near the rear mold core. The slider 1 and the slider seat 2 are connected by limiting screws so that the slider seat 2 has a first stroke relative to the slider 1. The outer core 7 of the product is installed in the slider 1 and is connected to the slider 1 for axial movement together. Specifically, the outer core 7 is inserted into the slider 1 and embedded in the connection, and then axially limited by the outer core connecting plate 6. The outer core connecting plate 6 is connected to the slider 1 by fasteners. The inner core 8 is connected to the slider seat 2 for axial movement together. Specifically, the inner core 8 is inserted into the side of the slider seat 2 near the rear mold core and is covered with the inner core connecting plate 9. The inner core 8 is embedded in the inner core connecting plate 9 and is connected to the slider seat 2 by fasteners. See Figure 3The side of the latch 10 near the rear mold is provided with a spring block groove opening downward, and the left and right ends of the spring block groove are inclined. The lower end of the latch 10 near the rear mold is also inclined. Two screw connection holes are provided on the far rear mold side of the latch 10, and a slider seat connecting key 10-1 is provided on the upper end of the far rear mold side of the latch 10; the upper end of the latch spring block 11-1 is provided with two slider connecting keys 11-1-1 arranged front and back, and the left end of the slider connecting key 11-1-1 is arranged in an inclined shape with the left lower and the right higher for easy reset, and a latch hole that passes through the left and right and opens upward is provided between the two slider connecting keys 11-1-1, and the left and right ends of the lower part of the latch hole are arranged in an inclined shape corresponding to the left and right ends of the spring block groove of the latch 10 so that the latch 10 can slide smoothly when it moves left and right, and the lower end of the latch spring block 11 is provided with two reset spring grooves arranged front and back; the latch 10 is inserted into the slider seat by its slider seat connecting key 10-1 2 is provided at the bottom of the slider seat 2, and is located at the bottom center of the slider seat 2, and is connected to the slider seat 2 by two fasteners passing through the corresponding screw connection holes of the trigger machine 10 and then screwed together; the trigger machine spring block 11-1 is inserted into the corresponding spring block connecting groove opened downward and rightward provided at the lower end of the slider seat 2 near the side edge of the rear mold core by its two slider connecting keys 11-1-1, and is located at the bottom center of the slider seat 2, and two return springs 11-1 are respectively arranged in the return spring grooves of the corresponding trigger machine spring blocks 11-1, so as to block the slider 1 from making the core-pulling movement away from the rear mold core 15 from the side under the support of the return springs 11-1, and the trigger machine 10 is embedded in the trigger machine hole of the trigger machine spring block 11-1 by its end near the rear mold core and can move left and right in the trigger machine hole, and when the end near the rear mold core of the trigger machine 10 moves away from the rear mold core 15, it can overcome the support of the return spring 11-2 and press the trigger machine spring block 11-1 downward. The trigger spring block 11 - 1 and the return spring 11 - 2 are limitedly arranged in corresponding limiting grooves of the rear mold 16 .

[0019] The slider water channel joint 14 is installed on the slider seat 2 and is connected to the cooling water channel in the slider seat 2 .

[0020] See Figure 4When the slider secondary demolding mechanism of an injection mold of the present embodiment is used, after the mold is opened, the slider seat 2 on the rear mold 16 is driven by the oil cylinder 4, and the power output axis of the oil cylinder 4 moves away from the rear mold core 15 side. The slider seat 2 is connected to the inner core 8 due to the limit screw connection with the slider 1. When the slider seat 2 just starts to move, the slider 1 does not move, and the outer core 7 mounted on the slider 1 does not move. When the slider seat 2 moves to a certain distance, that is, after the first stroke, under the action of the trigger machine 10, the trigger machine spring block 11-1 is pressed down and displaced, and the slider connecting key 11-1-1 is disengaged from the spring block connecting groove of the slider 1, the slider 1 is released from the axial movement restriction, and the slider 1 and the slider seat 2 move backward together, and the outer core 7 on the slider 1 and the inner core 8 on the slider seat 2 also move backward synchronously. The product 17 does not move in the rear mold core 15, realizing the secondary demolding action of the slider 1. When the mold is closed, the slider 1 and the slider seat 2 return to the starting position of the mold under the push of the cylinder 4, and the locking machine 10 and the locking machine spring block 11 also return to their original positions, preparing to cycle the next secondary mold opening and core pulling action.

[0021] Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A slider secondary demoulding mechanism for an injection mold, installed on a rear mold, characterized in that: It includes a slider, a slider seat, an outer core, an inner core, a latch machine, a latch machine spring block, a reset spring, a slider guide rail and a rear mold core; the rear mold core is arranged on the rear mold, the slider is transmission-connected to the outer core, the slider seat is transmission-connected to the inner core, the slider is located on the side of the slider seat near the rear mold core, the slider and the slider seat are connected by a limit screw so that the slider seat has a first stroke relative to the slider; the slider guide rail is installed on the rear mold, and the slider and the slider seat are slidingly arranged on the rear mold and the slider guide rail; the latch machine is connected to the bottom of the slider seat and can move with the slider seat, the latch machine spring block is arranged on the bottom of the slider seat near the slider side, and with the support of the reset spring, it blocks the slider from moving away from the rear mold core from the slider seat side, and the latch machine can press down the latch machine spring block so that the slider can move away from the rear mold core.

2. The slider secondary demoulding mechanism of the injection mold according to claim 1, characterized in that: It also includes a machine screw; a spring block groove opening downward is provided on the side of the rear mold core of the machine, and the left and right ends of the spring block groove are inclined, and the lower end of the machine near the rear mold core is also inclined, and two screw connecting holes are provided on the side of the far rear mold core of the machine, and a slider seat connecting key is provided on the upper end of the far rear mold core of the machine; two slider connecting keys arranged front and back are provided on the upper end of the spring block of the machine, and the left end of the slider connecting key is arranged in an inclined shape with the left lower and the right higher, and a machine hole that passes through from left to right and opens upward is provided between the two slider connecting keys, and the left and right ends of the lower part of the machine hole are arranged in an inclined shape corresponding to the left and right ends of the spring block groove of the machine, and the spring block of the machine is provided with a plurality of screw connecting holes, and the upper end of the plurality of slider connecting keys is provided with a plurality of slider connecting keys arranged front and rear, and the plurality of slider connecting keys are provided with a plurality of slider connecting keys ... The lower end is provided with two return spring grooves arranged front and back; the trigger machine is inserted into the corresponding trigger machine connecting groove provided below the slider seat by its slider seat connecting key, and is located in the lower center of the slider seat, and is screwed and connected to the slider seat after passing through the corresponding screw connecting holes of the trigger machine by two fasteners; the trigger machine spring block is inserted into the corresponding spring block connecting groove opened downward and rightward provided at the lower end of the slider seat near the side edge of the rear mold core by its two slider connecting keys, and is located in the lower center of the slider seat, two return springs are respectively arranged in the return spring grooves of the corresponding trigger machine spring blocks, and the trigger machine spring block and return spring limit are set in the corresponding limit grooves of the rear mold.

3. The slider secondary demoulding mechanism of an injection mold according to claim 1 or 2, characterized in that: It also includes a cylinder fixing plate, a cylinder and a pressure strip; the slider guide is a guide rail base opening upward; the slider guide is installed on the rear mold by fasteners; the cylinder fixing plate is provided with an output shaft limiting groove opening upward in a U shape, and the cylinder fixing plate is installed on the end of the slider guide away from the rear mold by fasteners; the rear mold core is installed on the rear mold by fasteners; the pressure strip is installed on the upper end surfaces of the front and rear ends of the slider guide by fasteners; the cylinder is installed on the cylinder fixing plate by fasteners, and the power output shaft of the cylinder passes through the output shaft limiting groove of the cylinder fixing plate and is connected to the keyway of the slider seat; the outer core of the product is installed in the slider and is connected to the slider for axial movement together, and the inner core is connected to the slider seat for axial movement together.

4. The slider secondary demoulding mechanism of the injection mold according to claim 3, characterized in that: It also includes an outer core connecting plate and an inner core connecting plate; the outer core is inserted into the slider and embedded in the connection, and then axially limited by the outer core connecting plate, and the outer core connecting plate is connected to the slider through fasteners; the inner core is inserted into the side of the slider seat near the rear mold core and is covered with the inner core connecting plate, the inner core is embedded in the inner core connecting plate, and the inner core connecting plate is connected to the slider seat through fasteners.

5. The slider secondary demoulding mechanism of the injection mold according to claim 1, characterized in that: It also includes a slider water channel joint; the slider water channel joint is installed on the slider seat and is connected with the cooling water channel in the slider seat.

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