Needle assembly mold

Abstract

The utility model discloses a needle assembly mold. The needle assembly mold comprises a bottom plate, a rear mold assembly, a front mold assembly and a top plate, the rear mold assembly is arranged on the bottom plate; the rear mold assembly comprises a group of iron blocks, a plate B, a rear mold core and a base plate; the square iron is arranged on the bottom plate and located on the two sides of the bottom plate. The plate B is arranged on the square iron; the rear mold core is arranged in the groove in the plate B; the base plate is arranged in a groove in the rear mold core; the front mold assembly is arranged above the rear mold assembly; the front mold assembly comprises a front mold core and a plate A; the front mold core is arranged above the rear mold core; the plate A is arranged above the front mold core; a group of mold cavities are formed between the front mold core and the rear mold core; the top plate is arranged above the plate A; a group of magnetic core-pulling mechanisms are arranged between the front mold core and the rear mold core; the magnetic core pulling mechanism is used for mold core pulling during mold opening. According to the needle assembly mold, the magnetic core pulling mechanism is designed to solve the core pulling problem, and the production efficiency is improved; meanwhile, due to the stability of the magnetic core pulling mechanism, the damage risk of the mold in the core pulling process is reduced, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of molding and injection molding, and particularly relates to a needle component mold. Background Art

[0002] The increase in the global aging population and the growing demand for healthcare in emerging markets are driving the growth of the medical device market, including needle assembly-related medical devices.

[0003] For long and narrow needle assembly molds, the design of the core pulling mechanism is critical. If the core pulling force and core pulling distance are not determined properly, or the mold material and surface treatment are not suitable for the plastic properties, it may cause adhesion.

[0004] Therefore, it is urgent to develop a simple and easy-to-use needle assembly mold for optimization. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a needle assembly mold, which solves the core pulling problem by designing a magnetic core pulling mechanism, is easy to operate and maintain, and improves production efficiency; at the same time, due to the stability of the magnetic core pulling mechanism, the risk of damage to the mold during the core pulling process can be reduced, and the service life of the mold can be extended.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a needle assembly mold, comprising a bottom plate, a rear mold assembly, a front mold assembly and a top plate; the rear mold assembly is arranged on the bottom plate; the rear mold assembly comprises a group of square irons, a B plate, a rear mold core and a pad; the square irons are arranged on the bottom plate and are on both sides of the bottom plate; the B plate is arranged on the square iron; the rear mold core is arranged in a groove on the B plate; the pad is arranged in a groove on the rear mold core; the front mold assembly is arranged above the rear mold assembly; the front mold assembly comprises a front mold core and an A plate; the front mold core is arranged above the rear mold core; the A plate is arranged above the front mold core; a group of mold cavities are formed between the front mold core and the rear mold core; the top plate is arranged above the A plate; a group of magnetic core pulling mechanisms are provided between the front mold core and the rear mold core; the magnetic core pulling mechanism is used for mold core pulling when the mold is opened.

[0007] Furthermore, the magnetic core-pulling mechanism includes a magnetic assembly and an ejection assembly; the magnetic assembly is disposed in a groove on the backing plate away from the mold cavity; and the ejection assembly is disposed on the backing plate, on the ejection assembly's side closer to the mold cavity. The magnetic assembly and the ejection assembly cooperate to complete the core-pulling of the needle assembly mold.

[0008] Furthermore, the magnetic assembly includes a limit block, a movable block, a first magnet, and a tube core mold; the limit block, movable block, and first magnet are arranged in a groove on the side of the backing plate away from the mold cavity, and are arranged in descending order from the mold cavity; the limit block is fixed to the bottom of the front mold core by bolts; the first magnet is arranged on one side of the movable block; one end of the tube core mold is plugged into the movable block, and the other end is arranged in the mold cavity. The first magnet is used to pop the movable block when the limit block is lifted, and at the same time drive the tube core mold to complete the core pulling.

[0009] Furthermore, an inclined surface is provided between the limit block and the movable block, which serves as a guide to ensure that the limit block can accurately limit the movable block when it is lifted or lowered.

[0010] Furthermore, the ejection assembly includes a first magnet and a heat shield, wherein the second magnet is disposed below the heat shield, and the heat shield prevents the second magnet from being demagnetized due to overheating.

[0011] Furthermore, the limiting block, the moving block, the first magnet and the second magnet cooperate to drive the tube core mold to pull out the core when the mold is opened.

[0012] Furthermore, when the mold is opened, the limiting block is lifted up by the front mold core, and the first magnet is activated by the second magnet to pop off the moving block, thereby driving the tube core mold to complete core pulling.

[0013] Furthermore, the rear mold assembly also includes a set of ejector plates and a plurality of ejector pins; the set of ejector plates is stacked on the bottom plate; the ejector pins are mounted on the ejector plates; the ejector pins sequentially pass through plate B and the rear mold core, and their upper ends are located on the lower surface of the mold cavity. The ejector plates cooperate with the ejector pins to eject the product when the mold is opened.

[0014] Furthermore, a lock is provided on one side of the A plate and the B plate, which ensures that the A plate and the B plate remain closed during the injection molding process.

[0015] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0016] 1. This utility model is a needle assembly mold, which is designed with a magnetic core pulling mechanism to ensure that the mold can be smoothly core pulled when the mold is opened. It has a simple structure, is easy to operate and maintain, and improves production efficiency.

[0017] 2. The needle assembly mold of the utility model can reduce the risk of damage to the mold during the core pulling process and extend the service life of the mold due to the stability of the magnetic core pulling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a needle assembly mold according to the present utility model;

[0019] Figure 2This is an exploded view of some components of a needle assembly mold according to the present invention;

[0020] Figure 3 This is a cross-sectional view of a needle assembly mold according to the present invention;

[0021] Figure 4 This is a structural schematic diagram of a magnetic core pulling mechanism in a needle assembly mold according to the present utility model;

[0022] Figure 5 This is a partial enlarged view of a magnetic core pulling mechanism in a needle assembly mold described in the present utility model (the backing plate is hidden);

[0023] Figure 6 This is a schematic diagram of a needle assembly mold according to the present invention after a moving block is ejected;

[0024] Figure 7 This is a side view of a magnetic core pulling mechanism in a needle assembly mold according to the present invention (without the backing plate);

[0025] In the picture:

[0026] 1- bottom plate;

[0027] 2-rear mold assembly; 21-square iron; 22-B plate; 23-rear mold core; 24-backing plate; 25-thimble plate; 26-thimble;

[0028] 3-front mold assembly; 31-front mold core; 32-A plate;

[0029] 4-top plate;

[0030] 5-magnetic core pulling mechanism; 51-magnetic component; 52-ejection component;

[0031] 511-limiting block; 512-moving block; 513-first magnet; 514-tube die; 521-second magnet; 522-heat shield;

[0032] 6-Lock. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] Example 1

[0035] In this embodiment, Figures 1 to 4The utility model discloses a needle assembly mold, including a bottom plate 1, a rear mold assembly 2, a front mold assembly 3 and a top plate 4; the rear mold assembly 2 is arranged on the bottom plate 1; the rear mold assembly 2 includes a set of square irons 21, a B plate 22, a rear mold core 23 and a pad 24; the square irons 21 are arranged on the bottom plate 1 and are located on both sides of the bottom plate 1; the B plate 22 is arranged on the square iron 21; the rear mold core 23 is arranged in a groove on the B plate 22; the pad 24 is arranged in a groove on the rear mold core 23 In the groove; the front mold assembly 3 is arranged above the rear mold assembly 2; the front mold assembly 3 includes a front mold core 31 and an A plate 32; the front mold core 31 is arranged above the rear mold core 24; the A plate 32 is arranged above the front mold core 31; a group of mold cavities are formed between the front mold core 31 and the rear mold core 24; the top plate 4 is arranged above the A plate 32; a group of magnetic core pulling mechanisms 5 are provided between the front mold core 31 and the rear mold core 23; the magnetic core pulling mechanism 5 is used for mold core pulling when the mold is opened.

[0036] Specifically, an injection port is provided on the top plate 4 for injection molding.

[0037] Specifically, cooling pipes are provided in both the rear mold core 23 and the front mold core 31 for cooling the molding process.

[0038] In particular, heat insulation plates can be added below the bottom plate 1 and above the top plate 4 to reduce heat transfer between the mold and the injection molding machine during the molding process and keep the temperature of the mold stable.

[0039] Example 2

[0040] On the basis of Example 1, in this embodiment, as Figures 4 to 7 The utility model discloses a needle assembly mold, the magnetic core pulling mechanism 5 includes a magnetic component 51 and a pop-up component 52; the magnetic component 51 is arranged in a groove on the side of the pad 24 away from the mold cavity; the pop-up component 52 is arranged on the pad 24 and is on the side of the pop-up component 52 close to the mold cavity.

[0041] In this embodiment, Figure 5 and Figure 6 The magnetic assembly 51 includes a limit block 511, a moving block 512, a first magnet 513 and a tube core mold 514; the pad 24 is in the groove on the side away from the mold cavity, and a limit block 511, a moving block 512 and a first magnet 513 are provided in sequence from far to near the mold cavity; the limit block 51 is fixed under the front mold core 31 by bolts; the first magnet 513 is provided on one side of the moving block 512; one end of the tube core mold 514 is plugged into the moving block 512, and the other end is provided in the mold cavity.

[0042] In particular, the first magnet 513 can be adjusted to magnets with different magnetic properties according to the distance required for core pulling.

[0043] In this embodiment, Figure 5 An inclined surface is provided between the limiting block 511 and the moving block 512 .

[0044] In this embodiment, Figure 7 The ejection assembly 52 includes a second magnet 521 and a heat insulation plate 522 ; the second magnet 521 is disposed below the heat insulation plate 522 .

[0045] In this embodiment, Figures 4 to 7 The limiting block 511, the moving block 512, the first magnet 513 and the second magnet 521 cooperate to drive the core mold 514 to pull the core when the mold is opened.

[0046] Specifically, when the mold is opened, the limiting block 511 is lifted up by the front mold core 31 , and the first magnet 513 is pushed away from the moving block 512 by the second magnet 521 , driving the tube core mold 514 to complete the core pulling.

[0047] In particular, the second magnet 521 can be adjusted to magnets with different magnetic properties according to the distance required for core pulling.

[0048] In this embodiment, Figure 1 and Figure 3 The rear mold assembly 2 also includes a set of ejector plates 25 and a plurality of ejector pins 26; the set of ejector plates 25 are stacked on the bottom plate 1; the ejector pins 26 are arranged on the ejector plates 25; the ejector pins 26 pass through the B plate 22 and the rear mold core 23 in sequence, and the upper ends are arranged on the lower surface of the mold cavity.

[0049] In particular, a spring is provided between the ejector plate 25 and the B plate 22 for buffering and protecting the mechanism.

[0050] In particular, the ejector pin 26 can adopt different ejection forms according to the product to be molded, such as flat ejector pin ejection, round ejector pin ejection, etc.

[0051] In this embodiment, Figure 1 and Figure 3 A lock 6 is provided on one side of the A plate 32 and the B plate 22.

[0052] In particular, the lock 6 can be replaced with an automatic lock, making the entire process more automated.

[0053] The working principle of the above embodiment is:

[0054] The utility model discloses a needle assembly mold. When the mold is opened, the lock 6 is opened, the A plate 32 drives the front mold core 31 to lift, and at the same time the limit block 511 is lifted. The first magnet 513 is activated by the second magnet 521 to pop off the moving block 512, driving the tube core mold 514 to complete the core pulling. Finally, the ejector plate 25 moves up to drive the ejector 26 to eject the product.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. A needle assembly mold, characterized in that: include: A bottom plate (1), a rear mold assembly (2), wherein the rear mold assembly (2) is arranged on the bottom plate (1); the rear mold assembly (2) comprises a set of square irons (21), a B plate (22), a rear mold core (23) and a pad (24); the square irons (21) are arranged on the bottom plate (1) and are located on both sides of the bottom plate (1); the B plate (22) is arranged on the square iron (21); the rear mold core (23) is arranged in a groove on the B plate (22); and the pad (24) is arranged in a groove on the rear mold core (23); A front mold assembly (3), the front mold assembly (3) being arranged above the rear mold assembly (2); the front mold assembly (3) comprising a front mold core (31) and an A plate (32); the front mold core (31) being arranged above the rear mold core (23); and the A plate (32) being arranged above the front mold core (31); A set of mold cavities is formed between the front mold core (31) and the rear mold core (23); A top plate (4), the top plate (4) being arranged above the A plate (32); A set of magnetic core-pulling mechanisms (5) is provided between the front mold core (31) and the rear mold core (23); the magnetic core-pulling mechanism (5) is used for core-pulling the mold when the mold is opened.

2. The needle assembly mold according to claim 1, characterized in that: The magnetic core-pulling mechanism (5) comprises a magnetic component (51) and an ejection component (52); The magnetic component (51) is arranged in a groove on a side of the backing plate (24) away from the mold cavity; the pop-up component (52) is arranged on the backing plate (24) and is located on a side of the pop-up component (52) close to the mold cavity.

3. The needle assembly mold according to claim 2, characterized in that: The magnetic assembly (51) comprises a limiting block (511), a moving block (512), a first magnet (513) and a tube core mold (514); The backing plate (24) is in a groove on a side away from the mold cavity, and a limit block (511), a moving block (512) and a first magnet (513) are sequentially provided from far to near the mold cavity; the limit block (511) is fixed below the front mold core (31) by bolts; the first magnet (513) is provided on one side of the moving block (512); one end of the tube core mold (514) is plugged into the moving block (512), and the other end is provided in the mold cavity.

4. The needle assembly mold according to claim 3, characterized in that: An inclined surface is provided between the limiting block (511) and the moving block (512).

5. The needle assembly mold according to claim 3, characterized in that: The ejection assembly (52) includes a second magnet (521) and a heat shield (522); The second magnet (521) is arranged below the heat insulation plate (522).

6. The needle assembly mold according to claim 5, characterized in that: The limiting block (511), the moving block (512), the first magnet (513) and the second magnet (521) cooperate to drive the tube core mold (514) to pull the core when the mold is opened.

7. The needle assembly mold according to claim 1, characterized in that: The rear mold assembly (2) further includes a set of ejector pin plates (25) and a plurality of ejector pins (26); The group of ejector plates (25) are stacked on the bottom plate (1); the ejector pins (26) are arranged on the ejector pin plates (25); the ejector pins (26) pass through the B plate (22) and the rear mold core (23) in sequence, and the upper ends are arranged on the lower surface of the mold cavity.

8. The needle assembly mold according to claim 1, characterized in that: A lock buckle (6) is provided on one side of the A plate (32) and the B plate (22).

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