Inverted drilling cover mold

Abstract

The utility model discloses a reverse drilling cover mold which 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 and a rear mold core; 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 front mold assembly is arranged above the rear mold assembly; the front mold assembly comprises a transverse mold opening assembly, a front mold core and a plate A; the transverse mold opening assembly is arranged above the plate B and the rear mold core; the front mold core is arranged above the rear mold core; the plate A is arranged above the front mold core; the transverse mold opening assembly is connected with the plate A; the transverse mold opening assembly is used for transversely opening the mold during mold opening; the transverse mold opening assembly comprises a group of sliding blocks, and the sliding blocks are arranged above the plate B and located on the two sides of the rear mold core; a group of mold cavities are formed among the sliding block, the front mold core and the rear mold core; and the top plate is arranged above the plate A. According to the reverse drilling cover mold, the transverse sliding block and the guide rod are arranged to be matched for mold opening, and the mold opening efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection molding field, especially relates to a reverse drill cover mould. BACKGROUND

[0002] The reverse drill is a medical device, mainly used in ligament reconstruction surgery. This tool is particularly important in anterior cruciate ligament reconstruction surgery of the knee joint, because it is necessary to build bone tunnels on the femur and tibia, and the bone tunnel is formed in the form of reverse drilling by using the reverse drill to drill back the drill diameter formed by the pilot drill bit.

[0003] The reverse drill cover is a component of the reverse drill, used to provide additional stability and accuracy during drilling.

[0004] However, it is found during production that the mold opening of the reverse drill cover is prone to mold sticking due to the large contact area between the product and the mold cavity in the mold opening direction, so there is an urgent need to design a new mold to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the above shortcomings, and provides a reverse drill cover mold, which is characterized by the following: a horizontal mold opening assembly is arranged, a horizontal sliding block and an inclined guide rod are used in cooperation with the front and rear mold cores, multi-angle mold opening is achieved, the contact area of the side surface during upward and downward mold opening is reduced to prevent sticking, and the mold opening efficiency is improved.

[0006] Technical scheme: In order to achieve the above purpose, the utility model provides a reverse drill cover mold, which 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 square irons, a B plate and a rear mold core; the square irons are arranged on the bottom plate and located on both sides of the bottom plate; the B plate is arranged on the square irons; the rear mold core is arranged in the groove on the B plate; the front mold assembly is arranged above the rear mold assembly; the front mold assembly comprises a horizontal mold opening assembly, a front mold core and an A plate; the horizontal mold opening assembly is arranged above the B plate and the rear mold core; the front mold core is arranged above the rear mold core; the A plate is arranged above the front mold core; the horizontal mold opening assembly is connected with the A plate; the horizontal mold opening assembly is used for horizontal mold opening; the horizontal mold opening assembly comprises a group of sliding blocks, the sliding blocks are arranged above the B plate and located on both sides of the rear mold core; a group of mold cavities are formed between the sliding blocks and the front mold core and the rear mold core; the top plate is arranged above the A plate. Multiple mold cavities are arranged, multiple products are produced at a time, and the production efficiency is improved; the horizontal mold opening assembly is arranged for horizontal mold opening, and the contact area of the side surface during upward and downward mold opening is reduced to prevent sticking.

[0007] Further, the horizontal mold opening assembly further comprises a guide rod; the guide rod is connected with the A plate. The guide rod has a simple structure and provides support for subsequent horizontal mold opening.

[0008] Furthermore, the slider is provided with an inclined opening, and the lower portion of the guide rod is arranged in the inclined opening. The inclined opening ensures that the slider can cooperate with the horizontal movement during the upward movement of the guide rod to perform horizontal mold opening.

[0009] Furthermore, a set of guide bars are provided on both sides of the slider above plate B; the slider can slide along the space formed by the guide bars and plate B. The guide bars provide lateral guidance for the slider, preventing excessive friction between the inclined opening and the guide rods, which could cause the slider to be lifted upward by the guide rods and affect mold opening.

[0010] Furthermore, the rear mold assembly further includes a set of ejector plates and a set 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.

[0011] Furthermore, a plurality of springs are provided between the ejector plate and plate B. The springs ensure that the ejector plate, after cooperating with the ejector pins to eject the product, falls back and the next injection molding process proceeds smoothly.

[0012] Furthermore, the front mold core is provided with a plurality of cooling pipes which are cooled by circulating cooling water, thereby greatly increasing the cooling speed, thereby shortening the production cycle and improving production efficiency.

[0013] Furthermore, an injection port is provided on the top plate, and injection molding is performed from the injection port to ensure smooth injection molding.

[0014] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0015] 1. The utility model is a reverse drilling cover mold, which is provided with multiple mold cavities, and can produce multiple products at one time, thereby improving the efficiency of injection molding;

[0016] 2. The utility model is a reverse drilling cover mold. In order to solve the problem that the contact area between the product and the mold cavity along the mold opening direction is large and the mold is prone to adhesion, a horizontal mold opening component is set up, and the front and rear mold cores are used in conjunction with horizontal sliders and inclined guide rods to open the mold at multiple angles. The contact area on the sides when opening the upper and lower molds is reduced to prevent adhesion, thereby improving the mold opening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a reverse drilling cover mold described in the utility model;

[0018] Figure 2 for Figure 1 A top view of

[0019] Figure 3 for Figure 2B-B toward section view of figure 1;

[0020] Figure 4 The utility model discloses a schematic view of the horizontal mold opening assembly in the inverted drill cover mold.

[0021] Figure 5 The utility model discloses a schematic view of the horizontal mold opening assembly in the inverted drill cover mold. Figure 4

[0022] Figure 6 The utility model discloses a schematic view of the horizontal mold opening assembly in the inverted drill cover mold. Figure 1

[0023] Figure 7 The utility model discloses a schematic view of the horizontal mold opening assembly in the inverted drill cover mold. Figure 2 The utility model discloses a schematic view of the horizontal mold opening assembly in the inverted drill cover mold.

[0024]

[0025] 1 - bottom plate;

[0026] 2 - rear mold assembly;21 - square iron;22 - B plate;23 - rear mold kernel;24 - thimble plate;25 - thimble;

[0027] 3 - front mold assembly;31 - horizontal mold opening assembly;32 - front mold kernel;33 - A plate;

[0028] 311 - slider;312 - guide rod;321 - cooling pipe;3111 - inclined hole;3112 - guide strip;

[0029] 4 - top plate;

[0030] 5 - spring;

[0031] 6 - injection port. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model. EMBODIMENT

[0033] In the embodiment, as shown in Figures 1 to 3 ​​​The utility model discloses a kind of reverse drilling cover mould, including bottom plate 1, rear mould component 2, front mould component 3 and top plate 4;The rear mould component 2 is located on bottom plate 1;The rear mould component 2 includes a group of square iron 21, B plate 22 and rear mould kernel 23;The square iron 21 is located on bottom plate 1, and it is at the both sides of bottom plate 1;The B plate 22 is located on square iron 21;The rear mould kernel 23 is located in recess on B plate 22;The front mould component 3 is located above rear mould component 2;The front mould component 3 includes transverse mould opening component 31, front mould kernel 32 and A plate 33;The transverse mould opening component 31 is located above B plate 22 and rear mould kernel 23;The front mould kernel 32 is located above rear mould kernel 23;The A plate 33 is located above front mould kernel 32;The transverse mould opening component 31 is connected with A plate 33;The transverse mould opening component 31 is used for transverse mould opening when mould opening;The transverse mould opening component 31 includes a group of sliders 311, and the slider 311 is located above B plate 22, and it is located at the both sides of rear mould kernel 23;A group of mould cavities are formed between the slider 311 and front mould kernel 32 and rear mould kernel 23;The top plate 4 is located above A plate 33.

[0034] Specifically, as Figure 6 A plate 33 and B plate 22 are each provided with a plurality of cooling pipes.

[0035] In particular, mechanical lock catch can be additionally provided between the side edges of B plate 22 and A plate 33 to ensure locking when the mechanism is closed.

[0036] In the embodiment, as Figure 3 And Figure 4 The transverse mould opening component 31 further includes guide rod 312, and the guide rod 312 is connected with A plate 33.

[0037] Specifically, as Figure 3 One end of the guide rod 312 is provided with a circular truncated cone protrusion, the guide rod 312 is arranged in a groove on the A plate 33, and the groove on the A plate 33 cooperates with the circular truncated cone protrusion at one end of the guide rod 312 to ensure that the guide rod 312 can be lifted up along with the lifting of the A plate 33.

[0038] In the embodiment, as Figure 3 The slider 311 is provided with inclined hole 3111, and the lower part of the guide rod 312 is arranged in the inclined hole 3111.

[0039] Specifically, the inclined angle between the inclined hole 3111 and B plate 22 is between 45° and 90°, so as to prevent the angle from being too small, the pressure between the inclined hole 3111 and the guide rod 312 from being too large when the mould is opened, and the friction force from being too large to cause damage to the guide rod 312 or the slider 311.

[0040] Specifically, the opening height is not higher than the thickness of the slider 311, that is, when the mould is completely opened, the lower end of the guide rod 312 is still in the inclined hole 3111.

[0041] In the embodiment, as shown in Figure 4 , Figure 5 and Figure 6 , two sides of the slider 311 above the B plate 22 are provided with a set of guide strips 3112; the slider 311 can slide along the guide strips 3112 and the space formed by the B plate 22.

[0042] In particular, the contact surface of the slider 311 and the B plate 22 can be subjected to electric discharge machining, and a certain thickness of electric discharge lines is reserved to reduce the adsorption force and friction of the contact surface, so as to ensure that the slider 311 can smoothly slide on the B plate 22.

[0043] In the embodiment, as shown in Figure 3 and Figure 7 , the rear mold assembly 2 further comprises a set of ejector plates 24 and a set of ejector pins 25; the set of ejector plates 24 are stacked on the bottom plate 1; the ejector pins 25 are arranged on the ejector plates 24; the ejector pins 25 sequentially pass through the B plate 22 and the rear mold core 23, and the upper ends are arranged on the lower surface of the mold cavity.

[0044] Specifically, since it is a cover-shaped product, the ejector pins 25 are preferably flat or round.

[0045] In the embodiment, as shown in Figure 7 , a plurality of springs 5 are arranged between the ejector plate 24 and the B plate 22.

[0046] Specifically, in order to improve the fatigue strength of the spring 5, stress shot blasting and spring edge shot blasting can be used for the spring 5.

[0047] In the embodiment, as shown in Figure 4 , a plurality of cooling pipes 321 are arranged on the front mold core 32.

[0048] In particular, the cooling pipes 321 can be additionally provided with a double-loop circuit to further improve the cooling efficiency.

[0049] In the embodiment, as shown in Figure 1 , Figure 2 and Figure 7 , the top plate 4 is provided with an injection port 6.

[0050] In particular, a heat insulation plate can be additionally arranged below the bottom plate 1 and above the top plate 4 to ensure the heat insulation performance of the mechanism.

[0051] The working principle of the above embodiment is as follows:

[0052] The utility model discloses a kind of inverted drill cover mould, when opening mould, A plate 33 drives front mould kernel 32 to go up, simultaneously drive guide rod 312 to go up;Guide rod 312 goes up through the inclined aperture 3111 drive slider 311 along the space between guide strip 3112 and B plate 22 transverse sliding, complete opening mould;

[0053] After opening mould is completed, ejector pin plate 24 goes up drive ejector pin 25 to go up, product is ejected;Product is ejected after in the action of spring 5, ejector pin plate 24 drive ejector pin 25 to fall back.

[0054] The above-mentioned is only preferred embodiment of the utility model, it should be pointed out, for ordinary skilled person in the prior art, without departing from the principle of the utility model, can make a number of improvements, these improvements also should be regarded as the protection range of the utility model.

Claims

1. A reverse circulation shoe mold, characterized by: The utility model relates to a mould structure for injection moulding, which comprises: a bottom plate (1), a back mould assembly (2) arranged on the bottom plate (1), the back mould assembly (2) comprising a group of square irons (21), a B plate (22) and a back mould core (23), the square irons (21) being arranged on the bottom plate (1) and on both sides of the bottom plate (1), the B plate (22) being arranged on the square irons (21), and the back mould core (23) being arranged in a groove on the B plate (22); a front mould assembly (3) arranged above the back mould assembly (2), the front mould assembly (3) comprising a horizontal mould opening assembly (31), a front mould core (32) and an A plate (33), the horizontal mould opening assembly (31) being arranged above the B plate (22) and the back mould core (23), the front mould core (32) being arranged above the back mould core (23), and the A plate (33) being arranged above the front mould core (32), the horizontal mould opening assembly (31) being connected to the A plate (33); the horizontal mould opening assembly (31) being used for horizontal mould opening; the horizontal mould opening assembly (31) comprising a group of sliders (311), the sliders (311) being arranged above the B plate (22) and on both sides of the back mould core (23); a group of mould cavities being formed between the sliders (311) and the front mould core (32) and the back mould core (23); a top plate (4) arranged above the A plate (33).

2. The reverse-casing cover mold according to claim 1, characterized by: the horizontal mould opening assembly (31) further comprising a guide rod (312), the guide rod (312) being connected to the A plate (33).

3. The reverse-casing cover mold according to claim 2, characterized by: the sliders (311) being provided with inclined openings (3111), and the lower part of the guide rod (312) being arranged in the inclined openings (3111).

4. The back reamer cap mold of claim 3, wherein: both sides of the sliders (311) above the B plate (22) being provided with a group of guide strips (3112), and the sliders (311) being capable of sliding along the space formed by the guide strips (3112) and the B plate (22).

5. The reverse-casing mold of claim 1, wherein: the back mould assembly (2) further comprising a group of ejector plates (24) and a group of ejector pins (25); the group of ejector plates (24) being stacked on the bottom plate (1), the ejector pins (25) being arranged on the ejector plates (24), the ejector pins (25) sequentially penetrating through the B plate (22) and the back mould core (23) and the upper ends of the ejector pins (25) being arranged on the lower surface of the mould cavities.

6. The reverse-casing cover mold according to claim 5, characterized by: a plurality of springs (5) being arranged between the ejector plates (24) and the B plate (22).

7. The reverse-casing mold of claim 1, wherein: a plurality of cooling pipes (321) being arranged on the front mould core (32).

8. The reverse-casing mold of claim 1, wherein: an injection port (6) being arranged on the top plate (4).

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