Two-stage sliding block movement structure of pipe nozzle mold

By adopting a two-stage slider movement structure in the injection mold, the first-stage slider and the pipe hole forming pin are driven forward and backward to drive the second-stage slider to slide, the problems of deformation and motion damping of the pipe hole forming pin during movement are solved, smooth translation and structural simplification are achieved, and application costs are reduced.

CN222946110UActive Publication Date: 2025-06-06BLOVELIGHT GUANGDONG INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202421934264.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-12
Publication Date
2025-06-06
Estimated Expiration
2034-08-12

AI Technical Summary

Technical Problem

In existing injection molds, the pipe hole forming pin is prone to deformation during movement, resulting in increased motion damping, and requires a complex transmission mechanism and a separate drive device, which is costly to be applied.

Method used

The two-stage slider movement structure of the nozzle mold is adopted, including the rear mold core, the base plate, the first-stage slider, the second-stage slider, the pipe hole forming pin and the oblique rod. The first-stage slider and the pipe hole forming pin are driven forward and backward movement through the lifting and lowering movement of the inclined rod, thereby promoting the sliding of the second-stage slider to achieve smooth translation of the pipe hole forming pin.

Benefits of technology

It ensures smooth translation of the pipe hole forming pin, avoids deformation and increase in motion damping, no separate driving device is required, the structure is simplified, and the application cost is lower.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a two-stage sliding block motion structure of a pipe nozzle mould, which comprises a rear mould core, a bottom plate, a primary sliding block, a secondary sliding block, a pipe hole forming pin and an inclined rod, the primary sliding block is arranged on the bottom plate, an inclined hole inclining forwards is arranged on the primary sliding block, the lower end of the inclined rod is coaxially aligned with the inclined hole, and the secondary sliding block is arranged on the rear mould core. The rear end of the pipe hole forming pin is fixedly connected with the front end of the first-stage sliding block, the second-stage sliding block is arranged at the front end of the first-stage sliding block, the pipe hole forming pin penetrates through the second-stage sliding block, the pipe hole forming pin can slide by a preset distance relative to the second-stage sliding block, and when the inclined rod moves downwards and is inserted into the inclined hole, the first-stage sliding block and the pipe hole forming pin are driven to move forwards. When the inclined rod moves upwards, the first-stage sliding block is driven to move forwards, the pipe hole forming pin pushes the second-stage sliding block to slide forwards, when the inclined rod moves upwards, the first-stage sliding block and the pipe hole forming pin are driven to move backwards, and the pipe hole forming pin pulls the second-stage sliding block to slide backwards. According to the utility model, smooth translation of the pipe hole forming pin can be ensured, an independent driving device is not needed, and the structure is more simplified.
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Description

Technical Field

[0001] The utility model relates to an injection mold with a nozzle workpiece, in particular to a two-stage slide block motion structure of the nozzle mold. Background Art

[0002] Many injection molded workpieces have a pipe structure, and some of the workpieces are required to have a nozzle extending outward. The pipe hole in the nozzle is generally injection molded using a pipe hole forming pin. In the prior art, a driving mechanism is generally used to drive the pipe hole forming pin to move back and forth to achieve mold closing and mold opening. Because the pipe hole forming pin is thinner and longer, when it moves in the mold, the pipe hole forming pin is easily deformed in the sliding channel, resulting in increased motion damping. Furthermore, a complex transmission mechanism and a separate driving device are required to drive the pipe hole forming pin to move, and the application cost is relatively high. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a two-stage slider motion structure of a nozzle mold with a simplified structure, which can ensure smooth translation of a tube hole forming pin and does not require a separate driving device, in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0005] The two-stage slider movement structure of a nozzle mold comprises a rear mold core, a bottom plate, a first-level slider, a second-level slider, a tube hole forming pin and an inclined rod, the bottom plate is fixed at an adjacent position of the rear mold core, the first-level slider is arranged on the bottom plate and the two are slidably matched, the first-level slider is provided with an inclined hole inclined forward, the inclined rod is fixed on a preset lifting seat, and the lower end of the inclined rod is coaxially aligned with the inclined hole, the rear end of the tube hole forming pin is fixedly connected to the front end of the first-level slider, the second-level slider is arranged at the front end of the first-level slider, and the second-level slider is slidably matched with the rear mold core, the tube hole forming pin passes through the second-level slider, and the tube hole forming pin can slide a preset distance relative to the second-level slider, when the inclined rod moves downward and inserts into the inclined hole, the first-level slider and the tube hole forming pin are driven to move forward, and the tube hole forming pin pushes the second-level slider to slide forward, when the inclined rod moves upward, the first-level slider and the tube hole forming pin are driven to move backward, and the tube hole forming pin pulls the second-level slider to slide backward.

[0006] Preferably, a through hole extending in the front-to-back direction is provided in the secondary slider, a limit rod is passed through the secondary slider, the limit rod is perpendicular to the through hole, a limit groove is provided on the outer wall of the tube hole forming pin, the limit rod is arranged in the limit groove and the two are slidably matched.

[0007] Preferably, a positioning block accommodating groove is provided in the secondary slider, a positioning block is provided in the positioning block accommodating groove, a rounded positioning end is formed at the end of the positioning block, the rounded positioning end is elastically abutted against the outer wall of the tube hole forming pin, and a positioning groove is provided on the outer wall of the tube hole forming pin for snap-fitting with the rounded positioning end.

[0008] Preferably, the positioning block receiving groove extends to the bottom of the secondary sliding block, the positioning block can slide up and down relative to the positioning block receiving groove, and an elastic rod is fixed in the positioning block receiving groove, and the elastic rod passes through the positioning block.

[0009] Preferably, two guide blocks are included, which are respectively arranged on the left and right sides of the primary sliding block, and the primary sliding block is slidably matched with the two guide blocks.

[0010] Preferably, an inner concave step opening is respectively opened on the opposite side of the two guide blocks, and an outer step portion is respectively formed on the left and right sides of the first-level sliding block, and the two outer step portions are respectively clamped in the inner concave step openings of the two guide blocks, and the outer step portions are slidably matched with the inner concave step openings.

[0011] In the two-stage slider movement structure of the nozzle mold disclosed by the utility model, the rear mold core and the bottom plate are adjacently fixed, the first-stage slider is slidably arranged on the bottom plate, and the second-stage slider is slidably arranged on the rear mold core. A lifting seat is provided above the first-stage slider, the second-stage slider and the rear mold core. When the mold is closed, the lifting seat drives the inclined rod to move downward, and the inclined rod is correspondingly inserted into the inclined hole. Based on the oblique driving relationship, the first-stage slider and the tube hole forming pin are moved forward. After moving a certain distance, the tube hole forming pin pushes the second-stage slider to slide forward until the second-stage slider and the tube hole forming pin both move to the front end position, and the front end of the tube hole forming pin moves into the molding cavity. After the workpiece is injection molded, the lifting seat drives the inclined rod to move upward, and the inclined rod drives the first-stage slider and the tube hole forming pin to move backward, and the tube hole forming pin is used to pull the second-stage slider to slide backward, and the front end of the tube hole forming pin withdraws from the tube hole of the workpiece. Based on the above structure, the utility model can ensure smooth translation of the tube hole forming pin by the movement mode of the two-stage slider, and there is no need to set up a separate driving device. The sliding drive can be achieved by using the inclined rod. The overall structure is simpler and the application cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of the two-stage slider motion structure of the nozzle mold of the utility model;

[0013] Figure 2 This is an exploded view of the two-stage slider motion structure of the nozzle mold of the utility model;

[0014] Figure 3 This is a cross-sectional view of the two-stage slider motion structure of the nozzle mold of the utility model;

[0015] Figure 4 It is a comparative view of different motion states of the two-stage slider motion structure of the nozzle mold of the utility model. DETAILED DESCRIPTION

[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0017] The utility model discloses a nozzle mold two-stage slider motion structure, combined with Figures 1 to 4 As shown, it includes a rear mold core 1, a bottom plate 2, a first-level slider 3, a second-level slider 4, a tube hole forming pin 5 and an inclined rod 6. The bottom plate 2 is fixed to the adjacent position of the rear mold core 1, the first-level slider 3 is arranged on the bottom plate 2 and the two are slidably matched, the first-level slider 3 is provided with an inclined hole 30 inclined forward, the inclined rod 6 is fixed to a preset lifting seat, and the lower end of the inclined rod 6 is coaxially aligned with the inclined hole 30, the rear end of the tube hole forming pin 5 is fixedly connected to the front end of the first-level slider 3, the second-level slider 4 is arranged at the front end of the first-level slider 3, and the The secondary slider 4 is slidably matched with the rear mold core 1, the tube hole forming pin 5 passes through the secondary slider 4, and the tube hole forming pin 5 can slide a preset distance relative to the secondary slider 4. When the inclined rod 6 moves downward and is inserted into the inclined hole 30, the primary slider 3 and the tube hole forming pin 5 are driven to move forward, and the tube hole forming pin 5 pushes the secondary slider 4 to slide forward. When the inclined rod 6 moves upward, the primary slider 3 and the tube hole forming pin 5 are driven to move backward, and the tube hole forming pin 5 pulls the secondary slider 4 to slide backward.

[0018] In the above structure, the rear mold core 1 and the bottom plate 2 are fixed adjacent to each other, the primary slider 3 is slidably arranged on the bottom plate 2, and the secondary slider 4 is slidably arranged on the rear mold core 1. The primary slider 3, the secondary slider 4 and the upper part of the rear mold core 1 are provided with a lifting seat. When the mold is closed, the lifting seat drives the inclined rod 6 to move downward, and the inclined rod 6 is correspondingly inserted into the inclined hole 30. Based on the oblique driving relationship, the primary slider 3 and the tube hole forming pin 5 are moved forward. After moving a certain distance, the tube hole forming pin 5 pushes the secondary slider 4 to slide forward until the secondary slider 4 and the tube hole forming pin 5 both move to the front end position, and the front end of the tube hole forming pin 5 moves into the forming cavity. The comparative view of the movement state is shown in FIG. Figure 4As shown, after the workpiece 100 is injection molded, the lifting seat drives the inclined rod 6 to move upward, and the inclined rod 6 drives the primary slider 3 and the tube hole forming pin 5 to move backward, and the tube hole forming pin 5 pulls the secondary slider 4 to slide backward, and the front end of the tube hole forming pin 5 withdraws from the tube hole of the workpiece 100. Based on the above structure, the utility model can ensure the smooth translation of the tube hole forming pin by the movement mode of the two-stage slider, and there is no need to set up a separate driving device, and only the inclined rod 6 can be used to realize the sliding drive, the overall structure is simpler, and the application cost is lower.

[0019] In order to make the tube hole forming pin 5 slide straightly back and forth relative to the secondary slider 4, in this embodiment, see Figure 3 The secondary slider 4 is provided with a through hole 40 extending in the front-to-back direction, and a limiting rod 41 is passed through the secondary slider 4. The limiting rod 41 is perpendicular to the through hole 40. The outer wall of the tube hole forming pin 5 is provided with a limiting groove 50. The limiting rod 41 is arranged in the limiting groove 50 and the two are slidably matched.

[0020] In the above structure, the limit rod 41 is perpendicular to the through hole 40 and protrudes into the through hole 40. The limit groove 50 is a groove with a set length. Based on the matching relationship between the limit rod 41 and the limit groove 50, the forward and backward sliding stroke of the limit rod 41 can be limited.

[0021] On this basis, a positioning block receiving groove 43 is provided in the secondary slider 4, a positioning block 42 is provided in the positioning block receiving groove 43, a rounded positioning end head 420 is formed at the end of the positioning block 42, the rounded positioning end head 420 is elastically abutted against the outer wall of the tube hole forming pin 5, and a positioning groove 51 is provided on the outer wall of the tube hole forming pin 5 to be snap-fitted with the rounded positioning end head 420. When the tube hole forming pin 5 slides to a specified position relative to the through hole 40, the rounded positioning end head 420 is aligned with the positioning groove 51 and snapped into the positioning groove 51, and based on this matching relationship, the tube hole forming pin 5 is positioned relative to the secondary slider 4.

[0022] In order to make the positioning block 42 have a certain elasticity, Figure 2 and Figure 3 As shown, in this embodiment, the positioning block receiving groove 43 extends to the bottom of the secondary slider 4, and the positioning block 42 can slide up and down relative to the positioning block receiving groove 43. A spring rod 44 is fixed in the positioning block receiving groove 43, and the spring rod 44 passes through the positioning block 42.

[0023] As a preferred method, see Figure 2This embodiment includes two guide blocks 7, which are respectively arranged on the left and right sides of the primary slider 3, and the primary slider 3 is slidably matched with the two guide blocks 7. In the above structure, by providing two guide blocks 7, the primary slider 3 can slide straightly forward and backward.

[0024] Regarding the specific sliding fit relationship, in the present embodiment, the two guide blocks 7 are provided with inner concave step openings 70 on opposite sides thereof, and outer step portions 31 are formed on the left and right sides of the primary sliding block 3, respectively. The two outer step portions 31 are respectively clamped in the inner concave step openings 70 of the two guide blocks 7, and the outer step portions 31 are slidingly fitted with the inner concave step openings 70.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A two-stage slider motion structure of a nozzle mold, characterized in that: The invention comprises a rear mold core (1), a bottom plate (2), a first-level slider (3), a second-level slider (4), a tube hole forming pin (5) and an inclined rod (6), wherein the bottom plate (2) is fixed to an adjacent position of the rear mold core (1), the first-level slider (3) is arranged on the bottom plate (2) and the two are slidably matched, the first-level slider (3) is provided with an inclined hole (30) inclined forward, the inclined rod (6) is fixed to a preset lifting seat, and the lower end of the inclined rod (6) is coaxially aligned with the inclined hole (30), the rear end of the tube hole forming pin (5) is fixedly connected to the front end of the first-level slider (3), the second-level slider (4) is arranged at the front end of the first-level slider (3), and the The secondary slider (4) is slidably matched with the rear mold core (1), the tube hole forming pin (5) passes through the secondary slider (4), and the tube hole forming pin (5) can slide a preset distance relative to the secondary slider (4). When the inclined rod (6) moves downward and is inserted into the inclined hole (30), the primary slider (3) and the tube hole forming pin (5) are driven to move forward, and the tube hole forming pin (5) pushes the secondary slider (4) to slide forward. When the inclined rod (6) moves upward, the primary slider (3) and the tube hole forming pin (5) are driven to move backward, and the tube hole forming pin (5) pulls the secondary slider (4) to slide backward.

2. The two-stage slider motion structure of the nozzle mold according to claim 1, characterized in that: The secondary slider (4) is provided with a through hole (40) extending in the front-to-back direction, the secondary slider (4) is provided with a limit rod (41), the limit rod (41) is perpendicular to the through hole (40), the outer side wall of the tube hole forming pin (5) is provided with a limit groove (50), the limit rod (41) is arranged in the limit groove (50), and the two are slidably matched.

3. The two-stage slider motion structure of the nozzle mold according to claim 2, characterized in that: The secondary slider (4) is provided with a positioning block receiving groove (43), a positioning block (42) is provided in the positioning block receiving groove (43), a rounded positioning end head (420) is formed at the end of the positioning block (42), the rounded positioning end head (420) is elastically abutted against the outer wall of the tube hole forming pin (5), and the outer wall of the tube hole forming pin (5) is provided with a positioning groove (51) which is snap-fitted with the rounded positioning end head (420).

4. The two-stage slider motion structure of the nozzle mold according to claim 3, characterized in that: The positioning block receiving groove (43) extends to the bottom of the secondary sliding block (4); the positioning block (42) can slide up and down relative to the positioning block receiving groove (43); a spring rod (44) is fixedly arranged in the positioning block receiving groove (43); and the spring rod (44) passes through the positioning block (42).

5. The two-stage slider motion structure of the nozzle mold according to claim 1, characterized in that: It comprises two guide blocks (7), which are respectively arranged on the left and right sides of the first-level slider (3), and the first-level slider (3) is slidably matched with the two guide blocks (7).

6. The nozzle mold two-stage slider motion structure according to claim 5, characterized in that: An inner concave step opening (70) is respectively formed on opposite sides of the two guide blocks (7), and outer step portions (31) are respectively formed on left and right sides of the primary sliding block (3). The two outer step portions (31) are respectively clamped in the inner concave step openings (70) of the two guide blocks (7), and the outer step portions (31) are slidably matched with the inner concave step openings (70).