Insert for repairing cracking of waterway of plastic mold

Abstract

The utility model relates to an insert for repairing water channel cracking of a plastic mould, which comprises an insert body, the lower end face of the insert body is gradually folded towards the upper end face to form a wedge-shaped structure, a pipe structure which is transversely arranged and penetrates through two opposite sides of the insert body is arranged in the insert body, and a plug for plugging a pipe is arranged at one end of the pipe structure. A sealing ring is arranged at the other end of the pipe structure; vertically arranged guide strips are respectively arranged on two sides of the pipe structure of the insert body; a notch is formed in the position, corresponding to the cracking position, of the edge of the mold core, and the shape of the notch is matched with that of the insert body. A guide groove corresponding to the guide strip is formed in the notch, an end of the circulating water path is arranged in the notch, and the end is attached to and aligned to the end, provided with the sealing ring, of the pipe structure. According to the utility model, the circulating water path at the broken position of the mold core is repaired through the insert, so that the normal use of the circulating water path can be ensured, and the problem of mold core scrapping caused by the damage of the circulating water path is avoided.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an insert for repairing cracks in water channels of plastic molds. Background Art

[0002] In the field of plastic injection molding, in order to facilitate the control of the temperature in the plastic mold, a cooling water channel is usually opened in the mold core of the plastic mold. The temperature is controlled by circulating the cooling water in the cooling water channel. In the mold core near the parting surface, the circulating water pipe is closer to the parting surface due to processing design and other issues. The circulating water pipe near the parting surface is prone to rupture during use. The closer to the parting surface, the more likely it is to rupture with the increase of the use cycle. Once the circulating water pipe is broken, the entire mold core will be scrapped. After scrapping, it is necessary to replace the new mold core or even the entire mold, which will increase the production cost for users. Utility Model Content

[0003] In order to solve the problem of mold core being scrapped due to rupture of a circulating water pipe near the parting surface, the utility model provides an insert for repairing cracks in the water channel of a plastic mold. The insert can be used to replace the mold core structure at the ruptured circulating water pipe near the parting surface of the mold core, thereby repairing the circulating water pipe and extending the service life of the mold core.

[0004] The technical purpose of this utility model is achieved through the following technical solutions:

[0005] An insert for repairing cracks in a water channel of a plastic mold is used for repairing a circulating water channel at the edge of a parting surface of a mold core, comprising an insert body, the lower end face of the insert body gradually converges toward the upper end face to form a wedge-shaped structure, a tube structure is transversely arranged inside the insert body and passes through opposite sides of the insert body, a plug for sealing the tube is arranged at one end of the tube structure, and a sealing ring is arranged at the other end of the tube structure; the insert body is provided with vertically arranged guide strips on both sides of the tube structure; a notch is arranged at the edge of the mold core corresponding to the cracked position of the circulating water channel, and the shape of the notch matches the shape of the insert body; a guide groove is arranged in the notch corresponding to the guide strip, an end of the circulating water channel is arranged in the notch, the insert is inserted into the notch in a matching manner, and the end of the circulating water channel is aligned with one end of the tube structure provided with the sealing ring.

[0006] Furthermore, a limit block is provided on the side of the insert body near the lower end surface for limiting the position of the insert installed in the notch, and a limit groove matching the limit block is provided on the lower end surface of the mold core near the edge of the notch. When the insert is inserted into the notch, the limit block is embedded in the limit groove.

[0007] Furthermore, the insert body is a hexahedral structure, and the surface where one end of the tube structure where the sealing ring is arranged is an inclined slope.

[0008] Furthermore, the angle of the inclined surface relative to the vertical direction is in the range of 15°-25°.

[0009] Furthermore, a sealing ring installation groove is provided at the position of the inclined surface, and the sealing ring is installed in the sealing ring installation groove. When the sealing ring is installed in the installation groove, it protrudes from the surface of the inclined surface.

[0010] Furthermore, the upper end face, the lower end face, the inclined surface and the opposite surface of the inclined surface of the insert body are all rectangular surfaces, and the remaining two surfaces of the insert body are relatively parallel and are right-angled trapezoidal surfaces.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the insert of the utility model can be used to repair the water channel of the mold core. The mold core position where the crack is located is replaced by the insert. After the replacement, the pipe structure in the insert realizes the replacement of the circulating water channel at the broken position, which can ensure the normal use of the circulating water channel and avoid the problem of mold core scrapping caused by damage to the circulating water channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the arrangement of the circulating water circuit inside the mold core in an embodiment of the utility model.

[0013] Figure 2 It is a schematic diagram of cracking of the circulating water circuit in the embodiment of the utility model.

[0014] Figure 3 The utility model is a schematic diagram of the exploded structure of an insert block for repairing cracks in a water channel of a plastic mold.

[0015] Figure 4 It is a schematic diagram of the notch arrangement in the embodiment of the utility model.

[0016] Figure 5 This is a usage state diagram of the insert of the utility model.

[0017] In the figure, 1, mold core; 2, parting surface; 3, water inlet pipe; 4, circulating water circuit; 5, circulating water circuit rupture position; 6, upper end surface; 7, lower end surface; 8, front side surface; 9, rear side surface; 10, left side surface; 11, right side surface; 12, pipe structure; 13, sealing ring; 14, sealing ring installation groove; 15, guide strip; 16, notch; 17, guide groove; 18, end; 19, limit block; 20, limit groove; 21, plug. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with specific implementation methods:

[0019] The mold core 1 of the plastic mold is provided with a circulating water path 4 for realizing water cooling circulation. Figure 1As shown, the circulating water enters the circulating water circuit 4 along the water inlet pipe 3, and the water circulates in the circulating pipe 4 to achieve the purpose of water cooling. The circulating water circulates through the circulating water circuit and then is discharged from the outlet pipe. With the use of the mold, a thinning area is easily formed near the parting surface of the circulating water circuit, so it may rupture later. The crack position 5 of the circulating water circuit is as shown in FIG. Figure 2 As shown, the circulating water channel 4 at the parting surface 2 of the mold core 1 is cracked. Usually, after the circulating water channel is broken, the mold core cannot be used any more and has to be scrapped.

[0020] Based on this, this embodiment provides an insert for repairing cracks in a plastic mold water channel, which is used to repair the circulating water channel at the edge of the parting surface of the mold core, such as Figure 3 As shown, it includes an insert body, which has an upper end face 6, a lower end face 7, a front side face 8, a rear side face 9, a left side face 10 and a right side face 11. The upper end face 6, the lower end face 7, the front side face 8 and the rear side face 9 are all rectangular faces, the left side face 10 and the right side face 11 are right-angled trapezoidal faces, the upper end face 6 is arranged parallel to the lower end face 7, the left side face 10 is arranged parallel to the right side face 11, the rear side face, the left side face and the right side face are arranged vertically, the upper side face and the lower side face are arranged horizontally, the front side face is an inclined slope, the front side face is inclined relative to the rear side face, and the angle between the front side face and the rear side face is 15°-25°.

[0021] The lower end face of the insert body gradually converges toward the upper end face to form a wedge-shaped structure. A tube structure 12 is arranged transversely and penetrates the opposite sides of the insert body in the insert body. The two ends of the tube structure 12 are formed on the front side 8 and the rear side 9, respectively. The tube structure 12 is provided with a plug 21 for pipe plugging at one end of the rear side 9. The plug can be an expansion plug, a threaded plug, etc., to achieve the plugging of one end of the tube structure 12. A sealing ring 13 is arranged at one end of the front side 8 of the tube structure 12. The sealing ring 13 is a common rubber ring. The sealing ring 13 is located at the outer contour position of the tube structure. A sealing ring installation groove 14 is arranged on the front side 8. The sealing ring 13 is inserted into the sealing ring installation groove 14. After the sealing ring 13 is inserted into the sealing ring installation groove 14, a part of the sealing ring 13 will protrude from the surface of the front side 8, which is convenient for subsequent squeezing of the sealing ring 13 to form a sealing effect.

[0022] The insert body is provided with vertical guide strips 15 on both sides of the tube structure 12 . The guide strips 15 are vertically arranged on the left side 10 and the right side 11 and protrude outward relative to the left side 10 and the right side 11 . The guide strips 15 are rectangular parallelepiped structures.

[0023] When the insert of the utility model is used, the parting surface of the mold core at the cracking position of the circulating water channel is cut off to form a notch 16, such as Figure 4As shown, the shape of the notch 16 matches the shape and size of the insert body; a guide groove 17 is provided in the notch 16 corresponding to the guide strip 15, and the original circulating water channel in the mold core is cut off when the notch is formed to form an end 18 of the circulating water channel in the notch, and the insert is inserted into the notch 16, and the end 18 of the circulating water channel is aligned with one end of the sealing ring 13 set on the pipe structure 12, and the sealing ring 13 is squeezed by the notch 16 of the mold core and the front side 8, so that the connection between one end of the sealing ring 13 set on the pipe structure 12 and the end 18 is realized and the water tightness at the connection position is ensured.

[0024] As a preferred embodiment, in order to control the accuracy of the insert being installed in the notch, the left and right sides of the insert body are respectively provided with stop blocks 19 near the lower end face, and the lower end face of the mold core is also provided with a stop groove 20 matching the stop block 19 near the edge of the notch 16. In this embodiment, the stop block 19 is a rectangular block, and the stop block 19 is embedded in the stop groove 20 when the insert is inserted into the notch 16. When the insert is inserted into the notch 16, it is inserted into the notch 16 from the lower end face of the mold core. After the insert is inserted into the notch 16, as shown in FIG. Figure 5 As shown, the material of the insert is selected from the same metal material as the mold core, such as iron, steel, hard alloy, etc. When processing the insert, the insert is processed according to the size and shape of the notch, and the notch can also be cut according to the insert.

[0025] This embodiment is only a further explanation of the utility model, not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the scope of the claims of the utility model, it will be protected by the patent law.

Claims

1. An insert for repairing cracks in water channels of plastic molds, used for repairing circulating water channels at the edge of the parting surface of the mold core, characterized in that: It comprises an insert body, the lower end face of the insert body gradually converges toward the upper end face to form a wedge-shaped structure, a tube structure is arranged transversely and passes through the opposite sides of the insert body in the insert body, a plug for sealing the tube is arranged at one end of the tube structure, and a sealing ring is arranged at the other end of the tube structure; the insert body is provided with vertically arranged guide strips on both sides of the tube structure; a notch is arranged at the edge position of the mold core corresponding to the crack position of the circulating water channel, and the shape of the notch matches the shape of the insert body; a guide groove is arranged in the notch corresponding to the guide strip, and an end of the circulating water channel is arranged in the notch, the insert is inserted into the notch in a matching manner, and the end of the circulating water channel is aligned with one end of the tube structure provided with the sealing ring.

2. The insert for repairing cracks in water channels of plastic molds according to claim 1, characterized in that: A limit block is provided on the side of the insert body near the lower end surface for limiting the position of the insert installed in the notch, and a limit groove matched with the limit block is provided on the lower end surface of the mold core near the edge of the notch. When the insert is inserted into the notch, the limit block is embedded in the limit groove.

3. The insert for repairing cracks in water channels of plastic molds according to claim 2, characterized in that: The insert body is a hexahedral structure, and the surface where one end of the tube structure is provided with a sealing ring is an inclined slope.

4. The insert for repairing cracks in water channels of plastic molds according to claim 3, characterized in that: The angle of the inclined surface relative to the vertical direction is in the range of 15°-25°.

5. The insert for repairing cracks in water channels of plastic molds according to claim 3, characterized in that: A sealing ring installation groove is also provided at the position of the inclined surface, and the sealing ring is installed in the sealing ring installation groove. When the sealing ring is installed in the installation groove, it protrudes from the surface of the inclined surface.

6. The insert for repairing cracks in water channels of plastic molds according to claim 3, characterized in that: The upper end face, the lower end face, the inclined surface and the opposite surface of the inclined surface of the insert body are all rectangular surfaces, and the remaining two surfaces of the insert body are relatively parallel and are right-angled trapezoidal surfaces.

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