Side core-pulling structure of injection mold for water tank of toilet bowl

Abstract

The utility model relates to a pedestal pan water tank injection mold side core-pulling structure which comprises a front mold with a water tank outer surface molding surface and a rear mold with a water tank inner surface molding surface, and further comprises a side core-pulling mechanism used for molding a side hole in a water tank, and the side core-pulling mechanism comprises a core-pulling block with a side hole molding surface, a moving block and a driving piece; a portal frame is detachably connected to the circumferential side face of the front mold, the moving block is connected to the portal frame in a sliding mode, the end, provided with a forming face, of the core pulling block is connected to the front mold in a sliding mode, the other end of the core pulling block is connected to the moving block in a sliding mode in the sliding direction inclined to the moving block, and the driving piece is used for driving the moving block to slide. The core-pulling block moves on the front mold through oblique movement between the core-pulling block and the moving block to complete the core-pulling action, the portal frame which is detachably connected is arranged on the side face of the front mold, and the moving block is connected to the portal frame in a sliding mode, so that the front mold of the mold is convenient to machine and manufacture, and the manufacturing cost of the injection mold for the water tank of the toilet bowl is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a side core-pulling structure for a toilet tank injection mold. Background Technology

[0002] Injection molds are tools used in injection molding processes. They inject molten plastic material into a specific cavity, and after the plastic cools and solidifies, it forms a plastic product with a specific shape and size. They are widely used in many industries such as electronics, automobiles, home appliances, and daily necessities.

[0003] Reference Figure 7 This is a structural diagram of a toilet tank. The tank is roughly frustum-shaped, with several side holes at the end where the cross-section in the depth direction is smaller. In existing technology, a slider and inclined guide post are commonly used to convert the vertical movement of the mold opening into the lateral movement of the slider, thereby achieving core-pulling molding of the side holes on the side of the tank.

[0004] However, the toilet tank is deep, and the side holes on the toilet tank are far from the parting surface of the mold. If the side core pulling operation is carried out by driving the slider with the inclined guide post, the mold processing is difficult and the manufacturing cost is high. Utility Model Content

[0005] In order to reduce the manufacturing cost of toilet tank injection molds, this application provides a side core-pulling structure for toilet tank injection molds.

[0006] The technical solution provided in this application for a side core-pulling structure for a toilet tank injection mold is as follows:

[0007] A side-pulling core structure for a toilet tank injection mold includes a front mold with a molding surface on the outer surface of the tank and a rear mold with a molding surface on the inner surface of the tank. It also includes a side-pulling core mechanism for molding side holes on the upper part of the tank. The side-pulling core mechanism includes a core-pulling block with a side hole molding surface, a sliding block, and a driving component. A gantry frame is detachably connected to the circumferential side of the front mold. The sliding block is slidably connected to the gantry frame. One end of the core-pulling block with a molding surface is slidably connected to the front mold, and the other end is slidably connected to the sliding block along a sliding direction inclined to the sliding block. The driving component is used to drive the sliding block to slide.

[0008] By adopting the above technical solution, the driving component drives the sliding block to slide on the gantry. Through the oblique movement between the core-pulling block and the sliding block, the core-pulling block moves on the front mold to complete the core-pulling action. Furthermore, by setting a detachable gantry on the side of the front mold and sliding the sliding block on the gantry, the processing and manufacturing of the front mold is facilitated, and the manufacturing cost of the toilet tank injection mold is reduced.

[0009] Preferably, the front mold includes several cavity plates, which are sequentially distributed along the mold opening direction, and the cavity plates are detachably connected to adjacent cavity plates, while the gantry frame is detachably connected to several cavity plates.

[0010] By adopting the above technical solution and setting up detachable and connectable cavity plates, the processing and manufacturing of the front mold of the mold is facilitated, while the manufacturing cost of the toilet tank injection mold is reduced. When the molding surface of any cavity plate is damaged, only the single cavity plate needs to be replaced, thereby reducing the subsequent maintenance cost of the mold.

[0011] Preferably, a sliding groove is provided on one end face of any of the cavity plates on the side of the mold opening direction, the core-pulling block is slidably connected in the sliding groove, and the adjacent cavity plates abut against the core-pulling block.

[0012] By adopting the above technical solution, the movement of the core-pulling block is limited by the sliding plate and the side of the adjacent cavity plate, reducing the possibility of deviation in the movement of the core-pulling block, while improving the processing accuracy of the upper side hole of the toilet bowl; and by making the sliding groove open on the end face, it is convenient to process and maintain the sliding groove, thereby reducing the manufacturing cost of the toilet tank injection mold and the subsequent maintenance cost of the mold.

[0013] Preferably, the gantry frame is provided with a slide rail, the sliding block is slidably connected in the slide rail, and the gantry frame is also provided with a limiting groove for limiting the sliding of the slide rail. The limiting groove is connected to the slide rail, and the circumferential end of the sliding block is slidably connected in the limiting groove.

[0014] By adopting the above technical solution, by setting slide rails and limiting grooves on the gantry frame, the sliding of the sliding block on the gantry frame is limited, reducing the possibility of deviation in the movement of the sliding block. At the same time, the movement distance of the sliding block is limited, thereby reducing the possibility of excessive movement of the core-pulling block causing uneven wall thickness of the toilet tank. Furthermore, by making the slide rails and limiting grooves on the gantry frame, it is convenient for the front mold processing, and when the slide rails are worn, the gantry frame can be replaced separately, thereby reducing the manufacturing cost and subsequent maintenance cost of the toilet tank injection mold.

[0015] Preferably, the end of the core-pulling block away from the forming surface is provided with a T-shaped block, and the sliding block is provided with a T-shaped groove. The end of the T-shaped block away from the core-pulling block is slidably connected in the T-shaped groove along the sliding direction inclined to the sliding block.

[0016] By adopting the above technical solution, the relative movement between the core-pulling block and the sliding block is limited through the cooperation between the T-shaped block and the T-shaped groove, so as to improve the movement accuracy of the core-pulling block and thus improve the processing accuracy of the upper side hole of the toilet.

[0017] Preferably, the T-shaped block is provided with a first abutting surface, and the T-shaped groove is provided with a second abutting surface. The first abutting surface and the second abutting surface are perpendicular to the moving direction of the core-pulling block. When the core-pulling block slides to the limit position towards the forming surface, the first abutting surface and the second abutting surface abut against each other.

[0018] By adopting the above technical solution, when the first abutting surface and the second abutting surface abut together, the position of the core-pulling block on the front mold is limited, reducing the possibility of displacement of the core-pulling block caused by the huge internal pressure during the injection molding process, thereby reducing the possibility of core-pulling retraction during injection molding.

[0019] The main technical effects of this utility model are reflected in the following aspects:

[0020] 1. This utility model sets up a gantry frame, and the driving component drives the sliding block to slide on the gantry frame. Through the oblique movement between the core-pulling block and the sliding block, the core-pulling block moves on the front mold to complete the core-pulling action. Furthermore, by setting a detachable gantry frame on the side of the front mold and sliding the sliding block on the gantry frame, it is convenient to process and manufacture the front mold and reduce the manufacturing cost of the toilet tank injection mold.

[0021] 2. This utility model, by setting up several cavity plates, and by setting up cavity plates that can be detached and connected separately, facilitates the processing and manufacturing of the front mold of the mold, while reducing the manufacturing cost of the toilet tank injection mold; when the molding surface of any cavity plate is damaged, only the single cavity plate can be replaced, thereby reducing the subsequent maintenance cost of the mold.

[0022] 3. This utility model, by setting a sliding groove, limits the movement of the core-pulling block through the sliding plate and the side of the adjacent cavity plate, reducing the possibility of deviation in the movement of the core-pulling block, and improving the processing accuracy of the upper side hole of the toilet bowl; and by making the sliding groove open on the end face, it is convenient to process and maintain the sliding groove, reducing the manufacturing cost of the toilet tank injection mold and the subsequent maintenance cost of the mold. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the front mold structure in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the side core-pulling mechanism in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the sliding groove structure in an embodiment of this application.

[0027] Figure 5This is a schematic diagram of the gantry structure in an embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the rear mold structure in an embodiment of this application.

[0029] Figure 7 This application presents a schematic diagram of the toilet tank structure.

[0030] Explanation of reference numerals in the attached drawings: 1. Front mold; 11. Cavity plate; 111. Sliding groove; 12. Gantry frame; 121. Slide rail; 122. Limiting slide groove; 2. Rear mold; 3. Side core pulling mechanism; 31. Core pulling block; 311. T-shaped block; 312. First abutment surface; 32. Sliding block; 321. T-shaped groove; 322. Second abutment surface; 33. Driving component; 331. Hydraulic cylinder; 4. Toilet tank; 41. Side hole. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0032] This application discloses a side core-pulling structure for a toilet tank injection mold.

[0033] Reference Figure 1 , Figure 2 and Figure 6 This embodiment of a toilet tank injection mold side core-pulling structure includes a front mold 1 with a water tank outer surface molding surface and a rear mold 2 with a water tank inner surface molding surface. A gantry frame 12 is detachably connected to the circumferential side of the front mold 1. The front mold 1 includes a plurality of cavity plates 11, which are sequentially distributed along the mold opening direction. The cavity plates 11 are detachably connected to adjacent cavity plates 11. The gantry frame 12 is detachably connected to the cavity plates 11. A sliding groove 111 is provided on the end face of any cavity plate 11 on the mold opening direction side.

[0034] Reference Figure 2 and Figure 3 By setting up detachable cavity plates 11, the processing and manufacturing of the front mold 1 is facilitated, while the manufacturing cost of the toilet tank 4 injection mold is reduced. When the molding surface on any cavity plate 11 is damaged, only a single cavity plate 11 needs to be replaced, thereby reducing the subsequent maintenance cost of the mold.

[0035] Reference Figure 3 , Figure 4 and Figure 5The system also includes a side core-pulling mechanism 3 for forming the side hole 41 on the upper side of the water tank. The side core-pulling mechanism 3 includes a core-pulling block 31 with a forming surface of the side hole 41, a sliding block 32, and a driving component 33. The sliding block 32 is slidably connected to the gantry frame 12. One end of the core-pulling block 31 with the forming surface is slidably connected to the sliding groove 111 along the mold opening direction perpendicular to the mold, and the adjacent cavity plate 11 abuts against the core-pulling block 31. The other end of the core-pulling block 31 is fixedly connected to a T-shaped block 311. A T-shaped groove 321 is provided on the sliding block 32. The end of the T-shaped block 311 away from the core-pulling block 31 is slidably connected to the T-shaped groove 321 along the sliding direction inclined to the sliding block 32. The driving component 33 is used to drive the sliding of the sliding block 32. The driving component 33 is a hydraulic cylinder 331, which is fixedly connected to the gantry frame 12, and one end of the piston rod of the hydraulic cylinder 331 is fixedly connected to the sliding block 32.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The driving component 33 drives the sliding block 32 to slide on the gantry 12. That is, the piston movement of the piston rod drives the sliding block 32 to reciprocate. The oblique movement between the core-pulling block 31 and the sliding block 32 causes the core-pulling block 31 to move on the front mold 1 to complete the core-pulling action. Furthermore, by setting a detachable gantry 12 on the side of the front mold 1 and sliding the sliding block 32 on the gantry 12, the processing and manufacturing of the front mold 1 is facilitated, and the manufacturing cost of the toilet tank 4 injection mold is reduced.

[0037] Reference Figure 3 and Figure 4 The movement of the core-pulling block 31 is limited by the sliding plate and the side of the adjacent cavity plate 11, reducing the possibility of deviation in the movement of the core-pulling block 31 and improving the machining accuracy of the upper side hole 41 of the toilet. Furthermore, by making the sliding groove 111 open on the end face, it is convenient to process and maintain the sliding groove 111, thereby reducing the manufacturing cost of the injection mold of the toilet tank 4 and the subsequent maintenance cost of the mold.

[0038] Reference Figure 3 and Figure 5 The relative movement between the core-pulling block 311 and the sliding block 321 is limited by the cooperation between the T-shaped block 311 and the T-shaped groove 321, so as to improve the movement accuracy of the core-pulling block 31 and thus improve the machining accuracy of the upper side hole 41 of the toilet.

[0039] Reference Figure 3 and Figure 5The T-shaped block 311 has a first abutment surface 312, and the T-shaped groove 321 has a second abutment surface 322. The first abutment surface 312 and the second abutment surface 322 are perpendicular to the moving direction of the core-pulling block 31. When the core-pulling block 31 slides to its limit position towards the molding surface, the first abutment surface 312 abuts against the second abutment surface 322. When the first abutment surface 312 and the second abutment surface 322 abut against each other, the position of the core-pulling block 31 on the front mold 1 is limited, reducing the possibility of displacement of the core-pulling block 31 caused by the huge internal pressure during injection molding, thereby reducing the possibility of core-pulling retraction during injection molding.

[0040] Reference Figure 1 , Figure 3 and Figure 5 The gantry frame 12 is provided with a slide rail 121, and the sliding block 32 is slidably connected in the slide rail 121. The gantry frame 12 is also provided with a limiting groove 122 for limiting the sliding of the slide rail 121. The limiting groove 122 is connected to the slide rail 121, and the circumferential end of the sliding block 32 is slidably connected in the limiting groove 122. By setting a slide rail 121 and a limiting groove 122 on the gantry frame 12, the sliding of the sliding block 32 on the gantry frame 12 is limited, reducing the possibility of deviation in the movement of the sliding block 32. At the same time, the movement distance of the sliding block 32 is limited, thereby reducing the possibility of excessive movement of the core-pulling block 31 causing thinning of the toilet seat tank wall. Furthermore, by making the slide rail 121 and the limiting groove 122 open on the gantry frame 12, it is convenient for the front mold 1 to be processed. When the slide rail 121 is worn, the gantry frame 12 can be replaced separately, thereby reducing the manufacturing cost and subsequent maintenance cost of the toilet tank 4 injection mold.

[0041] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A side core-pulling structure of an injection mold for a toilet tank, comprising a front mold (1) having a molding surface for an outer surface of the tank and a back mold (2) having a molding surface for an inner surface of the tank, characterized in that: Also include a side core-pulling mechanism (3) for forming the upper side hole (41) of the water tank, the side core-pulling mechanism (3) includes a core-pulling block (31) with a side hole (41) forming surface, a sliding block (32) and a driving member (33), the periphery of the front mold (1) is detachably connected with a gantry (12), the sliding block (32) is slidingly connected on the gantry (12), one end of the core-pulling block (31) with the forming surface is slidingly connected on the front mold (1), the other end is slidingly connected on the sliding block (32) along the sliding direction of the sliding block (32), and the driving member (33) is used for driving the sliding of the sliding block (32).

2. The side core-pulling structure of a toilet tank injection mold according to claim 1, characterized in that: The front mold (1) includes a plurality of cavity plates (11), a plurality of cavity plates (11) are sequentially distributed along the opening direction of the mold, and a plurality of cavity plates (11) are respectively detachably connected on adjacent cavity plates (11), and the gantry (12) is detachably connected on a plurality of cavity plates (11) at the same time.

3. The side core-pulling structure of a toilet tank injection mold according to claim 2, characterized in that: An end surface of any one of the cavity plates (11) on the opening direction is provided with a sliding groove (111), the core-pulling block (31) is slidingly connected in the sliding groove (111), and the adjacent cavity plates (11) abut on the core-pulling block (31).

4. The side core-pulling structure of a toilet tank injection mold according to claim 1, wherein: The gantry (12) is provided with a sliding rail (121), the sliding block (32) is slidingly connected in the sliding rail (121), and the gantry (12) is further provided with a limiting sliding groove (122) for limiting the sliding of the sliding rail (121), the limiting sliding groove (122) is communicated with the sliding rail (121), and the end of the sliding block (32) in the circumferential direction is slidingly connected in the limiting sliding groove (122).

5. The side core-pulling structure of a toilet tank injection mold according to claim 1, wherein: The core-pulling block (31) is provided with a T-shaped block (311) away from the forming surface, the sliding block (32) is provided with a T-shaped groove (321), and one end of the T-shaped block (311) away from the core-pulling block (31) is slidingly connected in the T-shaped groove (321) along the sliding direction of the sliding block (32).

6. The side core-pulling structure of a toilet tank injection mold according to claim 5, characterized in that: The T-shaped block (311) is provided with a first abutting surface (312), the T-shaped groove (321) is provided with a second abutting surface (322), the first abutting surface (312) and the second abutting surface (322) are perpendicular to the moving direction of the core-pulling block (31), and when the core-pulling block (31) slides to the limit position on the side of the forming surface, the first abutting surface (312) abuts against the second abutting surface (322).

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