Injection mold for eliminating flash of injection molded part

Abstract

The utility model provides an injection mold for eliminating flash of an injection molded part, which relates to the technical field of injection molds, and comprises a front mold core, a sliding block seat is arranged at the bottom end of the front mold core, a shoveling machine is arranged on the outer side of the sliding block seat, a sliding block insert is arranged in the shoveling machine and the sliding block seat, a secondary positioning block is arranged at the top end of the sliding block seat, and the secondary positioning block is arranged on the front mold core. A positioning groove matched with the secondary positioning block is formed in the bottom end of the front mold core; the secondary positioning block is additionally arranged on the sliding block seat for accurate positioning, and the positioning groove matched with the secondary positioning block is formed in the bottom end of the front mold core, so that double positioning can be performed through the sliding block insert and the secondary positioning block when the front mold core of the device and an external rear mold core are assembled, and even if a backhoe is abraded, the sliding block insert and the secondary positioning block can be separated from each other. Flanges can be well controlled through positioning, practicability is higher, the device is not affected by the temperature detection environment and the like, operation is reliable, later-period maintenance is easy, and output of bad products is synchronously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for eliminating flash of injection molded parts. Background Art

[0002] With the widespread application of plastic products in various industries, the requirements for the precision and appearance of injection molded parts are becoming increasingly higher. In traditional injection molds, due to the presence of certain gaps in the mold parting surface, the gap between the slider and the insert, when the plastic melt is injected into the mold cavity under high pressure during the injection molding process, it is easy to overflow in these gaps, forming flash.

[0003] In the prior art, an existing injection mold for eliminating flash of injection molded parts uses a slider mechanism more and more during use. Due to the limitations of plastic particles, such as PPS materials, which have good fluidity and more stringent requirements on the sealing mechanism, flash is easily generated due to slight wear. The subsequent process requires increased labor costs to eliminate the flash. Utility Model Content

[0004] The utility model mainly provides an injection mold for eliminating the flash of injection molded parts, which can solve the problem of flash, requiring constant adjustment of a slider for gap adjustment, consuming manpower and having no output, and the like.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an injection mold for eliminating flash of injection molded parts, comprising a front mold core, a slider seat is provided at the bottom end of the front mold core, a shovel is provided on the outside of the slider seat, a slider insert is provided together with the shovel and the slider seat, a secondary positioning block is installed at the top of the slider seat, and a positioning groove matching the secondary positioning block is opened at the bottom end of the front mold core.

[0006] Preferably, there are two slider inserts, and two insert grooves matching the slider inserts are provided in the slider seat and the shovel. Since there are two slider inserts, the shovel and the slider seat can be doubly limited by the setting of the two slider inserts, making them more stable.

[0007] Preferably, a mounting plate is fixed to the bottom end of the secondary positioning block, and the mounting plate is fixed to the slider seat by bolts. The top of the slider seat is provided with an inner cavity matching the mounting plate. Through the arrangement of the mounting plate and the bolt, when the user unscrews the bolt, the bolt no longer limits the mounting plate, and the user can directly take out the mounting plate and the secondary positioning block connected thereto. When it is worn, it is convenient to replace it without replacing the entire device, which is more practical.

[0008] Preferably, an opening matching the bolt is provided on the outer wall of the slider seat, and the hexagonal end of the bolt is arranged in the opening. Through the setting of the opening, the hexagonal end of the bolt is arranged in the opening, which will not affect the shovel covering the slider seat, and there is no need for the shovel to reserve a slot for the bolt in advance, which is more practical.

[0009] Preferably, an ejector port is provided in the slider seat, and an ejector mechanism is provided in the ejector port. The ejector mechanism facilitates ejection of the product after production.

[0010] Preferably, the two slider inserts are respectively arranged on both sides of the front mold core, and the two slider inserts do not contact the front mold core. By respectively arranging the two slider inserts on both sides of the front mold core, the shovel machine and the slider seat have two connection points, and the connection is more stable.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] In the utility model, a secondary positioning block is added to the slider seat for precise positioning, and a positioning groove matching the secondary positioning block is opened at the bottom end of the front mold core, so that the front mold core of the device can be doubly positioned by the slider insert and the secondary positioning block when the rear mold core of the outside world is closed. Even if the backhoe is worn, the flash generation can be well controlled with this positioning, which is more practical. The device is not affected by the high and low temperature environment and operates reliably, is easy to maintain in the later stage, and simultaneously reduces the output of defective products. Moreover, through the arrangement of the mounting plate and the bolt, when the user unscrews the bolt, the bolt no longer limits the mounting plate, and the user can directly take out the mounting plate and the secondary positioning block connected thereto. When it is worn, it is convenient to replace it without replacing the entire device, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model provides a front view of an injection mold for eliminating flash of injection molded parts;

[0014] Figure 2 The utility model provides a cross-sectional view of an injection mold for eliminating flash of injection molded parts.

[0015] Legend: 1. Front mold core; 2. Slider seat; 3. Shovel; 4. Slider insert; 5. Insert slot; 6. Ejector mechanism; 7. Ejector port; 8. Secondary positioning block; 9. Positioning slot; 10. Mounting plate; 11. Bolt; 12. Opening. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] See also Figure 1 - Figure 2 The present invention provides a technical solution: an injection mold for eliminating flash of injection molded parts, comprising a front mold core 1, a slider seat 2 is provided at the bottom end of the front mold core 1, a shovel 3 is provided on the outside of the slider seat 2, a slider insert 4 is provided in the shovel 3 and the slider seat 2, a secondary positioning block 8 is installed on the top of the slider seat 2, and a positioning groove 9 matching the secondary positioning block 8 is provided at the bottom end of the front mold core 1. By adding the secondary positioning block 8 to the slider seat 2 for precise positioning, and providing a positioning groove 9 matching the secondary positioning block 8 at the bottom end of the front mold core 1, the front mold core of the device can be double-positioned by the slider insert and the secondary positioning block 8 when the rear mold core of the external world is molded. Even if the backhoe is worn, this positioning can well control the generation of flash, and is more practical, so that the device is not affected by the high and low temperature environment and operates reliably, is easy to maintain in the later stage, and simultaneously reduces the output of defective products.

[0019] like Figure 1-2 As shown, there are two slider inserts 4, and two insert grooves 5 matching the slider inserts 4 are provided in the slider seat 2 and the shovel 3. The number of the slider inserts 4 is two, and the setting of the two slider inserts 4 can double-limit the shovel 3 and the slider seat 2, making them more stable.

[0020] like Figure 1-2 As shown, a mounting plate 10 is fixed to the bottom end of the secondary positioning block 8, and the mounting plate 10 is fixed to the slider seat 2 by bolts 11. The top of the slider seat 2 is provided with an inner cavity matching the mounting plate 10. Through the arrangement of the mounting plate 10 and the bolt 11, when the user unscrews the bolt 11, the bolt 11 no longer limits the mounting plate 10. The user can directly take out the mounting plate 10 and the secondary positioning block 8 connected thereto. When it is worn, it is convenient to replace it without replacing the entire device, which is more practical.

[0021] like Figure 1-2As shown, an opening 12 matching the bolt 11 is provided on the outer wall of the slider seat 2, and the hexagonal end of the bolt 11 is arranged in the opening 12. By setting the opening 12, the hexagonal end of the bolt 11 is arranged in the opening 12, which will not affect the shovel 3 covering the slider seat 2, and there is no need for the shovel 3 to reserve a slot for the bolt 11 in advance, which is more practical.

[0022] like Figure 1-2 As shown, an ejector port 7 is provided in the slider seat 2, and an ejector mechanism 6 is provided in the ejector port 7. The ejector mechanism 6 facilitates ejection of the product after production.

[0023] like Figure 1-2 As shown, the two slider inserts 4 are respectively arranged on both sides of the front mold core 1, and the two slider inserts 4 do not contact the front mold core 1. By having the two slider inserts 4 respectively arranged on both sides of the front mold core 1, the shovel 3 and the slider seat 2 have two connection points, and the connection is more stable.

[0024] The usage and working principle of this device: When the device is in use, precise positioning is performed by adding a secondary positioning block 8 to the slider seat 2, and a positioning groove 9 matching the secondary positioning block 8 is opened at the bottom end of the front mold core 1, so that the front mold core of the device can be doubly positioned by the slider insert and the secondary positioning block 8 when the rear mold core of the outside world is molded together. Even if the backhoe is worn, this positioning can well control the generation of flash, which is more practical, so that the device is not affected by the high and low temperature environment of the detection, and can operate reliably, is easy to maintain in the later stage, and simultaneously reduces the output of defective products. Through the setting of the mounting plate 10 and the bolt 11, when the user unscrews the bolt 11, the bolt 11 no longer limits the mounting plate 10, and the user can directly take out the mounting plate 10 and the secondary positioning block 8 connected thereto. When it is worn, it is convenient to replace it without replacing the entire device, which is more practical.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An injection mold for eliminating flash of injection molded parts, comprising a front mold core (1), characterized in that: The bottom end of the front mold core (1) is provided with a slider seat (2), the outer side of the slider seat (2) is provided with a shovel (3), the shovel (3) and the slider seat (2) are provided with a slider insert (4), the top end of the slider seat (2) is provided with a secondary positioning block (8), and the bottom end of the front mold core (1) is provided with a positioning groove (9) that matches the secondary positioning block (8).

2. The injection mold for eliminating flash of injection molded parts according to claim 1, characterized in that: The number of the slider inserts (4) is two, and two insert slots (5) matching the slider inserts (4) are provided in the slider seat (2) and the shovel (3).

3. The injection mold for eliminating flash of injection molded parts according to claim 1, characterized in that: A mounting plate (10) is fixed to the bottom end of the secondary positioning block (8), and the mounting plate (10) is fixed to the slider seat (2) via bolts (11). The top end of the slider seat (2) is provided with an inner cavity matching the mounting plate (10).

4. The injection mold for eliminating flash of injection molded parts according to claim 3, characterized in that: An opening (12) matching the bolt (11) is provided on the outer wall of the slider seat (2), and the hexagonal end of the bolt (11) is arranged in the opening (12).

5. The injection mold for eliminating flash of injection molded parts according to claim 1, characterized in that: An ejector opening (7) is provided in the slider seat (2), and an ejector mechanism (6) is provided in the ejector opening (7).

6. The injection mold for eliminating flash of injection molded parts according to claim 2, characterized in that: The two slider inserts (4) are respectively arranged on both sides of the front mold core (1), and the two slider inserts (4) do not contact the front mold core (1).

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