Water meter internal gear and forming die

Abstract

The utility model relates to the technical field of water meter parts, in particular to a water meter internal gear and a forming die. Comprising a lower mold, an upper mold and an auxiliary mechanism, the auxiliary mechanism comprises a lower water distribution seat, a lower water guide head, a connecting seat, an upper water distribution seat, an upper water guide head and a driving device, and after machining is completed, circulating cooling water is introduced into the bottom of a lower forming cavity of the lower mold through the connecting seat, the lower water distribution seat and the lower water guide head; circulating cooling water is introduced into the top of an upper forming cavity of the upper mold under the cooperation of an upper water diversion seat and an upper water guide head, and the cooling water flows from the front sides of the lower mold and the upper mold to the rear sides and then is guided out, so that an injection molded part is quickly cooled, and product shrinkage is reduced and the size precision is improved; the problems that an existing gear injection mold needs to be manually opened and closed during injection molding, natural cooling is adopted, the part taking time is long, the machining efficiency is low, meanwhile, rapid cooling of injection molding parts cannot be achieved, and reduction of product shrinkage and improvement of product size precision are not facilitated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter parts, in particular to an internal gear of a water meter and a forming die thereof. Background Art

[0002] The water meter gear is a key component for realizing the impeller transmission of the water meter, and its size and precision seriously affect the accuracy of the water meter. At present, most water meter gears are made by injection molding.

[0003] A prior art discloses a plastic injection mold, which includes a movable mold cavity part, a mold base, a sliding groove, a connecting rod, an intermediate mold cavity part, a material guide plate, a mold cover, a fastening nut, an injection port and a pulling rod. The mold base, the mold cover and the intermediate mold cavity part are connected by a connecting rod arranged on one side. The intermediate mold cavity part is located between the mold base and the mold cover and is fixed by a fastening nut arranged at one end of the connecting rod. The injection port is arranged on the mold cover, the material guide plate is arranged on the inner wall of the mold cover, the sliding groove is arranged on the inner wall of the mold base, the movable mold cavity part is arranged in the sliding groove, one end of the pulling rod is arranged on the movable mold cavity part, and the other end extends outwards. The opening on the material guide plate is matched with the material passing channel of the intermediate mold cavity part and the sealing opening on the movable mold cavity part. For this plastic injection mold of the utility model, each part of the mold is connected by a rod, and when injecting and opening the mold, only the fastening nut needs to be loosened or tightened to close or open the mold, without assembling and disassembling the mold, which facilitates the injection operation. At the same time, due to the structure of the sliding mold cavity part, injection molding of multiple structures can be realized with one mold.

[0004] However, when the above injection mold is used for injection molding of gears, when opening the mold, it is necessary to manually loosen and tighten the fastening nut to close or open the mold. At the same time, natural cooling is adopted, resulting in a long part taking time and low processing efficiency. Also, rapid cooling of the injection molded parts cannot be achieved, which is not conducive to reducing product shrinkage and improving product dimensional accuracy. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a forming die for an internal gear of a water meter, so as to solve the problems that the current gear injection mold needs to be manually opened and closed during injection molding production, and natural cooling is adopted, resulting in a long part taking time and low processing efficiency. At the same time, rapid cooling of the injection molded parts cannot be achieved, which is not conducive to reducing product shrinkage and improving product dimensional accuracy.

[0006] To achieve the above purpose, the utility model provides a forming die for an internal gear of a water meter, which includes a lower die and an upper die. The upper die is located above the lower die, and an auxiliary mechanism is also included;

[0007] The auxiliary mechanism includes a lower water distribution base, a lower guide water head, a connecting base, an upper water distribution base, an upper guide water head, and a driving device. The lower water distribution base is fixedly connected to the lower mold and is located on both the front and rear sides of the lower mold. The lower guide water head is threadedly connected to the lower water distribution base and is detachably connected to the lower water through hole on the lower mold, and is located on the side of the lower water distribution base close to the lower mold. The lower water through hole is not communicated with the lower forming cavity of the lower mold. The connecting base is fixedly connected to the lower water distribution base and is located on the left side of the lower water distribution base. The upper water distribution base is fixedly connected to the upper mold and is located on both the front and rear sides of the upper mold. The upper guide water head is threadedly connected to the upper water distribution base and is detachably connected to the upper water through hole on the upper mold, and is located on the side of the upper water distribution base close to the upper mold. The upper water through hole is not communicated with the upper forming cavity of the upper mold. The driving device is arranged on the top of the upper mold.

[0008] Among them, the driving device includes a support rod, a fixing plate, and a matching component. The support rod is threadedly connected to the lower mold and is located on the lower mold. The fixing plate is fixedly connected to the support rod and is located on the top of the support rod. The matching component is arranged on one side of the fixing plate.

[0009] Among them, the matching component includes a hydraulic cylinder, a connecting plate, and a guiding member. The hydraulic cylinder is fixedly connected to the fixing plate and is located on the fixing plate. The connecting plate is fixedly connected to the output end of the hydraulic cylinder and is fixedly connected to the upper mold, and is located on the side of the hydraulic cylinder close to the upper mold. The guiding member is arranged on the side of the lower mold close to the upper mold.

[0010] Among them, the guiding member includes a guiding rod and a T-shaped guiding sliding bearing. The guiding rod is fixedly connected to the lower mold and is located on the lower mold. The T-shaped guiding sliding bearing is fixedly connected to the upper mold and is slidably connected to the guiding rod, and is located on the upper mold.

[0011] Among them, the auxiliary mechanism further includes a T-shaped stable sliding bearing and a stable guide rod. The T-shaped stable sliding bearing is fixedly connected to the fixing plate and is located on the fixing plate. The stable guide rod is threadedly connected to the upper mold and is slidably connected to the T-shaped stable sliding bearing, and is located on the side of the upper mold close to the T-shaped stable sliding bearing.

[0012] Among them, an internal gear of a water meter can be manufactured by the water meter internal gear forming mold described above.

[0013] A forming die for internal gears of a water meter according to the present utility model. The lower die can be used for fixing the die body. A liquid inlet is provided on the side wall of the upper forming cavity of the upper die. An active liquid inlet pipe is fitted and installed outside the liquid inlet. A lower water through hole is provided on the lower die, and the lower water through hole is not communicated with the lower forming cavity. The upper die is provided with an upper water through hole, and the upper water through hole is not communicated with the upper forming cavity. A connecting seat is installed on the left side of the lower water distribution seat. The upper water distribution seats are installed on the front and rear sides of the upper die. The lower water distribution seats are installed on the front and rear sides of the lower die. During processing, the driving device operates to drive the upper die to move downward and cooperate with the lower die to form a processing cavity. Then, the processing material liquid is input through the active liquid inlet pipe on the upper die. Finally, under the cooperation of the lower die and the upper die, the forming process is completed. After the processing is completed, circulating cooling water can be respectively introduced into the bottom of the lower forming cavity of the lower die through the cooperation of the connecting seat, the lower water distribution seat and the lower water guiding head, and circulating cooling water can be introduced into the top of the upper forming cavity of the upper die through the cooperation of the upper water distribution seat and the upper water guiding head. The cooling water can flow from the front side to the rear side of the lower die and the upper die respectively and then be discharged, so that the injection molded part can be quickly cooled, which is beneficial to reducing product shrinkage and improving product dimensional accuracy, and further can solve the problems that the current gear injection mold needs to be manually opened and closed during injection production, and natural cooling is adopted, resulting in a long part taking time and low processing efficiency. At the same time, the rapid cooling of the injection molded part cannot be achieved, which is not conducive to reducing product shrinkage and improving product dimensional accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0015] Figure 1 It is a schematic diagram of the overall structure of the forming die for internal gears of a water meter according to the first embodiment of the present utility model.

[0016] Figure 2 It is a schematic diagram of the installation position of the lower water guiding head according to the first embodiment of the present utility model.

[0017] Figure 3 It is a schematic diagram of the installation position of the upper water guiding head according to the first embodiment of the present utility model.

[0018] Figure 4 It is a cross-sectional view of the lower die according to the first embodiment of the present utility model.

[0019] Figure 5 It is a schematic diagram of the overall structure of the forming die for internal gears of a water meter according to the second embodiment of the present utility model.

[0020] In the figure: 101 - lower mold, 102 - upper mold, 103 - lower water distributor base, 104 - lower water guide head, 105 - connecting seat, 106 - upper water distributor base, 107 - upper water guide head, 108 - lower water through hole, 109 - lower forming cavity, 110 - upper water through hole, 111 - upper forming cavity, 112 - support rod, 113 - fixing plate, 114 - hydraulic cylinder, 115 - connecting plate, 116 - guiding rod, 117 - T-shaped guiding sliding bearing, 201 - T-shaped stable sliding bearing, 202 - stable guiding rod. Specific implementation mode

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Embodiment 1:

[0023] As Figures 1 to 4 shown, wherein Figure 1 is a schematic diagram of the overall structure of the internal gear forming mold of the water meter, Figure 2 is a schematic diagram of the installation position of the lower water guide head 104, Figure 3 is a schematic diagram of the installation position of the upper water guide head 107, Figure 4 is a cross-sectional view of the lower mold 101. The present invention provides an internal gear forming mold for a water meter, which includes a lower mold 101, an upper mold 102 and an auxiliary mechanism. The auxiliary mechanism includes a lower water distributor base 103, a lower water guide head 104, a connecting seat 105, an upper water distributor base 106, an upper water guide head 107 and a driving device. The driving device includes a support rod 112, a fixing plate 113 and a matching component. The matching component includes a hydraulic cylinder 114, a connecting plate 115 and a guiding member. The guiding member includes a guiding rod 116 and a T-shaped guiding sliding bearing 117. Through the foregoing solution, it is possible to solve the problems that the current gear injection mold needs to be manually opened and closed during production injection, and natural cooling is used, resulting in a long part-taking time and low processing efficiency. At the same time, rapid cooling of the injection molded part cannot be achieved, which is not conducive to reducing product shrinkage and improving product dimensional accuracy. It can be understood that the foregoing solution can achieve automatic control of mold opening and closing, and can achieve rapid cooling of the injection molded part, which is conducive to reducing product shrinkage and improving product dimensional accuracy, and improving processing efficiency.

[0024] In this embodiment, the upper mold 102 is located above the lower mold 101. An inlet is provided on the side wall of the upper forming cavity 111 of the upper mold 102, and a movable inlet pipe is fitted and installed outside the inlet.

[0025] The lower water diversion seat 103 is fixedly connected to the lower mold 101 and is located at the front and rear sides of the lower mold 101. The lower water guide head 104 is threadedly connected to the lower water diversion seat 103 and is detachably connected to the lower water through hole 108 on the lower mold 101 and is located on the side of the lower water diversion seat 103 close to the lower mold 101. The lower water through hole 108 is not connected to the lower molding cavity 109 of the lower mold 101. The connecting seat 105 is fixedly connected to the lower water diversion seat 103 and is located at the lower mold 101. On the left side of the lower water diversion seat 103, the upper water diversion seat 106 is fixedly connected to the upper mold 102 and is located on the front and rear sides of the upper mold 102. The upper water guide head 107 is threadedly connected to the upper water diversion seat 106 and is detachably connected to the upper water through hole 110 on the upper mold 102, and is located on the side of the upper water diversion seat 106 close to the upper mold 102. The upper water through hole 110 is not connected to the upper molding cavity 111 of the upper mold 102, and the driving device is arranged on the top of the upper mold 102. The lower mold 101 is provided with a plurality of penetrating lower water holes 108, the lower water holes 108 are not connected with the lower molding cavity 109, the lower water guide head 104 can directly slide into the lower water hole 108, the upper mold 102 is provided with a plurality of penetrating upper water holes 110, the upper water holes 110 are not connected with the upper molding cavity 111, the cross section of the connecting seat 105 is I-shaped, the output side flange is installed on the left water inlet of the lower water diversion seat 103 by bolts, the input side connecting flange is connected with the connecting flange of the external fixed water pipe, the lower water diversion seat 103 is provided with a plurality of L-shaped water guide ports, the external thread of the lower water guide head 104 The end is directly installed in the threaded water outlet of the L-shaped water guide port, the upper water separation seat 106 is installed on the front and rear sides of the upper mold 102 by bolts, and the lower water separation seat 103 is installed on the front and rear sides of the lower mold 101 by bolts. A plurality of L-shaped water guide ports are arranged on the upper water separation seat 106, and the external threaded end of the upper water guide head 107 is directly installed in the threaded water outlet of the L-shaped water guide port and can slide into the upper water hole 110. The rubber water pipe is fixed to the water guide pipe of the upper water separation seat 106 by a clamp so that it will not fall off during movement. The driving device is arranged on the top of the upper mold 102, and is used to drive the upper mold 102 to cooperate with the lower mold 101.

[0026] Secondly, the support rod 112 is threadedly connected to the lower die 101 and is located on the lower die 101; the fixing plate 113 is fixedly connected to the support rod 112 and is located at the top of the support rod 112; the matching component is arranged on one side of the fixing plate 113. The support rod 112 is an external hexagonal rod, which is convenient for rotation. The external threaded end of its bottom can be directly installed in the threaded installation hole of the lower die 101, and the threaded hole at the top will facilitate the fixing plate 113 to be connected and fixed by bolts. The matching component is arranged on one side of the fixing plate 113 and is used for the processing cooperation between the lower die 101 and the upper die 102.

[0027] Then, the hydraulic cylinder 114 is fixedly connected to the fixing plate 113 and is located on the fixing plate 113; the connecting plate 115 is fixedly connected to the output end of the hydraulic cylinder 114, is fixedly connected to the upper die 102, and is located on the side of the hydraulic cylinder 114 close to the upper die 102; the guiding member is arranged on the side of the lower die 101 close to the upper die 102. The hydraulic cylinder 114 is fixed to the fixing plate 113 by bolts. Its output end is stepped, consisting of a smooth shaft end and an external threaded end. A through hole is provided in the center of the connecting plate 115 to facilitate the external threaded end of the output end of the hydraulic cylinder 114 to pass through, but the smooth shaft end does not pass through. Then, it is locked by a locking wire ring. Further, the connecting plate 115 is fixed to the top of the upper die 102 by bolts, and an avoidance hole is provided on the upper die 102 to avoid the locking wire ring.

[0028] Finally, the guiding rod 116 is fixedly connected to the lower die 101 and is located on the lower die 101; the T-shaped guiding sliding bearing 117 is fixedly connected to the upper die 102, is slidably connected to the guiding rod 116, and is located on the upper die 102. The guiding rod 116 is T-shaped and is installed in the installation hole of the lower die 101 by a positioning pin and bolts. The positioning pin and bolts are countersunk. The T-shaped guiding sliding bearing 117 adopts a T-shaped linear sliding bearing with a flange, which is convenient for sliding cooperation with the guiding rod 116 and is fixed to the upper die 102 by bolts.

[0029] When using the present utility model to solve the problems that the current gear injection mold requires manual opening and closing during injection molding production and uses natural cooling, resulting in long part-taking time and low processing efficiency. At the same time, rapid cooling of the injection molded parts cannot be achieved, which is not conducive to reducing product shrinkage and improving product dimensional accuracy. During processing, control the movement of the hydraulic cylinder 114 to drive the upper mold 102 to descend and cooperate with the lower mold 101 to form a processing cavity. Then, input the processing liquid through the movable liquid inlet pipe on the upper mold 102. Finally, complete the forming process in the processing cavity formed by the cooperation of the lower mold 101 and the upper mold 102. After processing, circulating cooling water can be introduced into the lower water through hole 108 at the bottom of the lower forming cavity 109 of the lower mold 101 through the cooperation of the connecting seat 105, the lower water distribution seat 103 and the lower water guiding head 104 respectively, and circulating cooling water can be introduced into the upper water through hole 110 at the top of the upper forming cavity 111 of the upper mold 102 through the cooperation of the upper water distribution seat 106 and the upper water guiding head 107. The cooling water can flow from the front side to the rear side of the lower mold 101 and the upper mold 102 respectively and then be discharged. During circulation, the heat of the lower forming cavity 109 and the upper forming cavity 111 can be carried away, so that the injection molded parts can be quickly cooled, which is conducive to reducing product shrinkage and improving product dimensional accuracy. Furthermore, the problems that the current gear injection mold requires manual opening and closing during injection molding production and uses natural cooling, resulting in long part-taking time and low processing efficiency. At the same time, rapid cooling of the injection molded parts cannot be achieved, which is not conducive to reducing product shrinkage and improving product dimensional accuracy can be solved.

[0030] Embodiment 2:

[0031] As Figure 5 shown, where Figure 5 is the overall structural schematic diagram of the internal gear forming mold of the water meter. The present utility model provides an internal gear forming mold for the water meter, and the auxiliary mechanism further includes a T-shaped stable sliding bearing 201 and a stable guide rod 202.

[0032] Among them, the T-shaped stable sliding bearing 201 is fixedly connected to the fixed plate 113 and is located on the fixed plate 113; the stable guide rod 202 is threadedly connected to the upper mold 102 and is slidably connected to the T-shaped stable sliding bearing 201, and is located on the side of the upper mold 102 close to the T-shaped stable sliding bearing 201. The T-shaped stable sliding bearing 201 adopts a T-shaped linear sliding bearing with a flange, which is convenient for sliding cooperation with the stable guide rod 202 and is fixed on the fixed plate 113 by bolts. The outer threaded end of the bottom of the stable guide rod 202 is directly installed in the threaded connection hole on the upper mold 102, and its optical axis end can be slidably mated with the T-shaped stable sliding bearing 201, and its top is provided with an internal hexagonal hole, which is convenient for turning by an internal hexagonal wrench.

[0033] In this embodiment, by providing the T-shaped stable sliding bearing 201 and the stable guide rod 202, the stability during the downward movement of the upper die 102 can be further improved.

[0034] Finally, an internal gear of a water meter can be manufactured by the internal gear forming die of the water meter.

[0035] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A water meter internal gear forming mold, comprising a lower mold and an upper mold, wherein the upper mold is located above the lower mold, and is characterized in that: It also includes auxiliary institutions; The auxiliary mechanism includes a lower water diversion seat, a lower water guide head, a connecting seat, an upper water diversion seat, an upper water guide head and a driving device. The lower water diversion seat is fixedly connected to the lower mold and is located at the front and rear sides of the lower mold. The lower water guide head is threadedly connected to the lower water diversion seat and is detachably connected to the lower water through hole on the lower mold and is located on the side of the lower water diversion seat close to the lower mold. The lower water through hole is not connected to the lower forming cavity of the lower mold. The connecting seat is fixedly connected to the lower water diversion seat and is located on the left side of the lower water diversion seat. The upper water diversion seat is fixedly connected to the upper mold and is located at the front and rear sides of the upper mold. The upper water guide head is threadedly connected to the upper water diversion seat and is detachably connected to the upper water through hole on the upper mold and is located on the side of the upper water diversion seat close to the upper mold. The upper water through hole is not connected to the upper forming cavity of the upper mold. The driving device is arranged on the top of the upper mold.

2. The water meter internal gear forming mold according to claim 1, characterized in that: The driving device includes a support rod, a fixing plate and a matching component. The support rod is threadedly connected to the lower mold and is located on the lower mold; the fixing plate is fixedly connected to the support rod and is located on the top of the support rod; the matching component is arranged on one side of the fixing plate.

3. The water meter internal gear forming mold according to claim 2, characterized in that: The mating component includes a hydraulic cylinder, a connecting plate and a guide member. The hydraulic cylinder is fixedly connected to the fixed plate and is located on the fixed plate; the connecting plate is fixedly connected to the output end of the hydraulic cylinder and to the upper mold, and is located on the side of the hydraulic cylinder close to the upper mold; the guide member is arranged on the side of the lower mold close to the upper mold.

4. The water meter internal gear forming mold according to claim 3, characterized in that: The guide member includes a guide rod and a T-shaped guide sliding bearing, wherein the guide rod is fixedly connected to the lower mold and is located on the lower mold; the T-shaped guide sliding bearing is fixedly connected to the upper mold, slidably connected to the guide rod, and is located on the upper mold.

5. The water meter internal gear forming mold according to claim 2, characterized in that: The auxiliary mechanism also includes a T-shaped stable sliding bearing and a stable guide rod, wherein the T-shaped stable sliding bearing is fixedly connected to the fixed plate and is located on the fixed plate; the stable guide rod is threadedly connected to the upper mold and is slidingly connected to the T-shaped stable sliding bearing, and is located on the side of the upper mold close to the T-shaped stable sliding bearing.

6. A water meter internal gear, characterized in that: The water meter internal gear can be manufactured by using the water meter internal gear forming mold as described in any one of claims 1 to 5.

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