Fixing structure of water gap crochet hook

Abstract

According to the fixing structure of the water gap crochet hook, when the water gap crochet hook is installed, one end of the crochet hook is inserted into and abuts against the interior of the installation space, and the other end of the crochet hook penetrates out of the first installation hole and can be exposed out of a mold, so that demolding use is facilitated. In the machining process, only the open avoiding arc-shaped groove needs to be formed in the connecting piece, the first mounting hole is formed in the mounting part, mounting of the water gap crochet hook can be completed through the avoiding arc-shaped groove and the first mounting hole, a specific cutter does not need to be adopted for machining, and due to the adoption of the open avoiding arc-shaped groove, the machining efficiency is greatly improved. And the machining difficulty and the machining precision are lower, so that the finished product rate after machining is improved. Therefore, the nozzle crochet hook can be quickly inserted, accurately positioned and stably clamped so as to be fixed between the first mounting plate and the connecting piece. And secondly, the connecting piece can be directly machined through CNC, secondary machining or machining of the connecting piece through a specific cutter is not needed, and therefore the production efficiency of the connecting piece is improved.

Description

Technical Field

[0001] This application relates to the field of injection molding, and more particularly to a fixing structure for a sprue hook. Background Technology

[0002] Injection molding first requires feeding plastic raw material from the hopper into the injection molding machine's feed port. The plastic is heated and melted inside the barrel by the screw. The rotating screw pushes the plastic forward, while the heating element heats it to the set temperature, making it a viscous molten plastic. The screw advances forward, injecting the molten plastic into the closed mold cavity at high pressure and high speed. After the cavity is filled, a certain pressure is continued to be applied to prevent the plastic from shrinking or generating air bubbles during cooling. Cooling water is circulated inside the mold to gradually solidify the molten plastic into the finished product.

[0003] During mold opening or demolding, after the mold is opened, the product and the sprue (gate material) are usually integrated and need to be separated. At this time, a sprue hook is used to hook the sprue part and separate it from the product.

[0004] Existing sprue hooks (as attached) Figure 1 The part labeled 1) is installed on the mold by a snap-fit ​​mechanism. During mold manufacturing, a "T"-shaped groove needs to be created on the mold (as shown in the attached image). Figure 1 (Ref. 1a) In this case, specialized cutting tools are required, such as T-shaped tools or copper electrode EDM machining. Secondly, to ensure installation stability, the intermediate connectors (as shown in the attached document) need to be... Figure 1 The outer peripheral surface of the component marked 2) is machined at a certain angle, while the outer peripheral surface of the connector is an arc surface. It is very difficult to maintain a certain angle during the machining process, which makes it inconvenient to machine and results in a very high scrap rate of the finished product.

[0005] At the same time, there is a protrusion (3) on the connector. Under the restricted position of the protrusion, at least two "T"-shaped grooves need to be machined. For the protrusion, it is very difficult to machine two "T"-shaped grooves at an adjacent distance under the required inclination angle. Moreover, under some size restrictions, it is impossible to machine the fixed "T"-shaped groove of the sprue hook, which makes it very limited.

[0006] During installation, the sprue hook needs to be suspended in the "T"-shaped groove first, and then the connector is installed on other components. Because the sprue hook is suspended in the "T"-shaped groove, it is very easy for the sprue hook to shake and fall out during installation, which makes the installation of the sprue hook inconvenient. Utility Model Content

[0007] In view of this, it is necessary to provide a fixing structure for the sprue hook to solve the above problems.

[0008] Embodiments of this application provide a fixing structure for a sprue hook, comprising:

[0009] A first mounting plate is provided with a mounting part, and the mounting part has a first mounting hole;

[0010] A connector is mounted on the first mounting plate, and the peripheral surface of the connector is provided with an open clearance arc groove. The inner wall of the clearance arc groove and the first mounting plate form an installation space, and the installation space communicates with the first mounting hole.

[0011] One end of the sprue hook abuts against the installation space, and the other end extends through the first installation hole to the outside.

[0012] In at least one embodiment of this application, the mounting part is provided with an abutment groove, the abutment groove is connected to the first mounting hole, and the sprue hook abuts against the inner wall of the abutment groove and the inner wall of the avoidance arc groove.

[0013] In at least one embodiment of this application, the abutting groove has a first abutting surface, the avoidance arc groove has a second abutting surface, and one end of the sprue hook abuts between the first abutting surface and the second abutting surface respectively to fix the sprue hook.

[0014] In at least one embodiment of this application, the abutment groove includes a first arc-shaped surface and a second arc-shaped surface that connect with the first abutment surface, and the first arc-shaped surface, the second arc-shaped surface, and the second abutment surface surround to form the avoidance arc-shaped groove.

[0015] In at least one embodiment of this application, the first arcuate surface and the second arcuate surface are disposed opposite to each other, and the first arcuate surface and the second arcuate surface are far apart from each other.

[0016] In at least one embodiment of this application, there are at least two mounting portions and at least two clearance arc grooves, with each clearance arc groove corresponding to one of the mounting portions.

[0017] In at least one embodiment of this application, the first mounting plate has a first through groove, the mounting part is located on the peripheral wall of the first through groove, and the connector part is received in the first through groove and extends through the first through groove to the outside.

[0018] In at least one embodiment of this application, the first mounting plate has a first fixing hole, and the connector has a second fixing hole;

[0019] The fixing structure of the sprue hook also includes:

[0020] The fastener has one end abutting against the connector, and the other end extending through the second fixing hole to the first fixing hole and being fixed to the first mounting plate.

[0021] In at least one embodiment of this application, the fixing structure of the sprue hook further includes:

[0022] The second mounting plate has a second mounting hole. The second mounting plate is fixedly connected to the first mounting plate. The second mounting hole communicates with the first mounting hole, and the axes of the first mounting hole and the second mounting hole are collinear.

[0023] One end of the sprue hook abuts against the installation space, while the other end extends through the first and second installation holes to the outside.

[0024] In at least one embodiment of this application, a clearance hole is provided on the side of the second mounting plate away from the first mounting plate. The clearance hole communicates with the second mounting hole and is used to accommodate the hook of the water inlet hook away from the first mounting plate.

[0025] The fixing structure of the sprue hook in this embodiment will have at least the following beneficial effects:

[0026] The aforementioned fixing structure for the sprue hook allows for installation by inserting one end of the hook into the mounting space and having the other end protrude through the first mounting hole, exposed outside the mold for easy demolding. During processing, only an open, clearance-type arc groove needs to be created on the connector, and a first mounting hole on the mounting portion. The sprue hook can be installed using the clearance arc groove and the first mounting hole, eliminating the need for specific cutting tools. The open clearance arc groove further reduces processing difficulty and precision, improving the yield rate. This allows for quick insertion, precise positioning, and stable clamping of the sprue hook between the first mounting plate and the connector.

[0027] Secondly, CNC machining can directly produce connectors without the need for secondary machining or specific cutting tools, thus improving the production efficiency of connectors.

[0028] During installation, simply pass the sprue hook through the first mounting hole and position it on the first mounting plate. Then, install the connector onto the first mounting plate. At this point, a clearance space is formed within the installation space, and the sprue hook is fixed within the installation space, thus achieving the installation of the sprue hook. There is no need to suspend the hook on the connector for installation, making the installation simpler. Attached Figure Description

[0029] Figure 1 This is a structural diagram of a connector in the prior art;

[0030] Figure 2 An exploded view of the fixing structure of the sprue hook;

[0031] Figure 3 A three-dimensional diagram of the fixing structure of the sprue hook (with sprue hook);

[0032] Figure 4 for Figure 2 Structural diagram of the first mounting plate;

[0033] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0034] Figure 6 for Figure 2 Structural diagram of the connecting component;

[0035] Figure 7 Another perspective view of the fixing structure of the sprue hook;

[0036] Figure 8 for Figure 3 A sectional view of the fixing structure of the hook at the middle water inlet;

[0037] Figure 9 for Figure 8 Enlarged view of section B;

[0038] Figure 10 for Figure 2 Another structural diagram of the connecting component.

[0039] Explanation of main component symbols

[0040] 100. Fixing structure of the sprue hook;

[0041] 110. First mounting plate; 111. Mounting part; 111a. First mounting hole; 111b. Abutment groove; 111c. First abutment surface; 111f. First through groove; 111g. First fixing hole;

[0042] 120, Connector; 120a, Abutment groove; 120b, Installation space; 120c, Second abutment surface; 120d, Second fixing hole; 120e, First arc-shaped surface; 120f, Second arc-shaped surface;

[0043] 130. Fasteners;

[0044] 140, Second mounting plate; 140a, Second mounting hole; 140b, Clearance hole;

[0045] 150. Sprue hook. Detailed Implementation

[0046] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0047] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0048] Embodiments of this application provide a fixing structure 100 for a sprue hook, comprising:

[0049] The first mounting plate 110 is provided with a mounting part 111, and the mounting part 111 is provided with a first mounting hole 111a;

[0050] A connector 120 is installed on the first mounting plate 110, and the peripheral surface of the connector 120 is provided with an open clearance arc groove 120a. The inner wall of the clearance arc groove 120a and the first mounting plate 110 form an installation space 120b, and the installation space 120b communicates with the first mounting hole 111a.

[0051] One end of the sprue hook abuts against the installation space 120b, and the other end extends through the first installation hole 111a to the outside.

[0052] Please refer to Figures 2-10 In this embodiment, the mounting portion 111 of the first mounting plate 110 is provided with a first mounting hole 111a, and the connector 120 is mounted on the first mounting plate 110. The avoidance arc groove 120a on the connector 120 is a partially open arc-shaped recess structure, which together with the surface of the first mounting plate 110 forms a closed clamping space - the mounting space 120b.

[0053] When installing the sprue hook 150, one end of the hook is inserted into and abuts against the installation space 120b, and the other end of the hook passes through the first installation hole 111a and can be exposed outside the mold for easy demolding.

[0054] During the processing, it is only necessary to open an open clearance arc groove 120a on the connector 120 and open a first mounting hole 111a on the mounting part 111. The installation of the sprue hook can be completed by using the clearance arc groove 120a and the first mounting hole 111a. No special cutting tools are required for processing. Moreover, the use of an open clearance arc groove 120a makes the processing difficulty and processing accuracy lower, thereby improving the yield of finished products.

[0055] This allows the sprue hook 150 to be quickly inserted, accurately positioned, and stably clamped, so as to be fixed between the first mounting plate 110 and the connector 120.

[0056] Secondly, CNC machining can directly produce the connector 120 without the need for secondary machining or specific tools, thereby improving the production efficiency of the connector 120.

[0057] During installation, simply place the sprue hook 150 onto the first mounting plate 110 through the first mounting hole 111a, and then install the connector 120 onto the first mounting plate 110. At this time, a clearance space is formed in the installation space 120b, and the sprue hook 150 is fixed in the installation space 120b to achieve the installation of the sprue hook. It is not necessary to suspend the hook on the connector 120 for installation, making the installation simpler.

[0058] It should be noted that the mounting part 111 is roughly an arched protrusion, the first mounting hole 111a is a circular through hole, and the avoidance arc groove 120a is roughly an inwardly recessed arc groove with an inwardly concave arch shape, which matches the mounting part 111.

[0059] In at least one embodiment of this application, the mounting part 111 is provided with an abutment groove 111b, the abutment groove 111b is connected to the first mounting hole 111a, and the sprue hook 150 abuts against the inner wall of the abutment groove 111b and the inner wall of the avoidance arc groove 120a.

[0060] Please refer to Figures 2-10 In this embodiment, the abutment groove 111b opened on the mounting part 111 is connected to the first mounting hole 111a. When installing the sprue hook 150, one end of the sprue hook 150 is inserted into the abutment groove 111b and abuts against the inner wall of the abutment groove 111b to form a complete support. The other end passes through the first mounting hole 111a to the outside to form a preliminary fixed installation. Then, the connector 120 is installed on the first mounting plate 110 to complete the fixing of the sprue hook.

[0061] During the installation and relocation process, since one end of the sprue hook 150 is initially fixed in the abutment groove 111b and partially housed in the abutment groove 111b, and the other end of the sprue hook penetrates through the first mounting hole 111a to the outside, the sprue hook 150 will not come out of the abutment groove 111b and the first mounting hole 111a during the relocation process, which facilitates the installation and fixation of the sprue hook.

[0062] The abutment groove 111b is roughly a circular hole groove, and its diameter is larger than that of the first mounting hole 111a.

[0063] In at least one embodiment of this application, the abutment groove 111b has a first abutment surface 111c, the avoidance arc groove 120a has a second abutment surface 120c, and one end of the sprue hook abuts between the first abutment surface 111c and the second abutment surface 120c respectively to fix the sprue hook 150.

[0064] Please refer to Figures 2-10 In this embodiment, the abutment groove 111b provided in the mounting part 111 has a first abutment surface 111c, and the avoidance arc groove 120a on the connector 120 has a second abutment surface 120c. The first abutment surface 111c and the second abutment surface 120c are arranged parallel to each other. One end of the sprue hook is clamped and abutted between the first abutment surface 111c and the second abutment surface 120c to achieve positioning and fixation.

[0065] The first abutting surface 111c is located at the bottom of the abutting groove 111b. The first abutting surface 111c is a plane, providing stable support.

[0066] The second abutment surface 120c is located at the bottom of the groove inside the avoidance arc groove 120a. The second abutment surface 120c is a plane. The connector 120 is installed on the first mounting plate 110. The two sides of one end of the sprue hook 150 abut against the first abutment surface 111c and the second abutment surface 120c respectively, thereby fixing the sprue hook 150 to prevent the sprue hook 150 from shaking or moving along the axial direction, making the sprue hook 150 more stable.

[0067] In at least one embodiment of this application, the abutment groove 111b includes a first arcuate surface 120e and a second arcuate surface 120f that are connected to the first abutment surface 111c. The first arcuate surface 120e, the second arcuate surface 120f, and the second abutment surface 120c surround and form the avoidance arcuate groove 120a.

[0068] Please refer to Figures 2-10In this embodiment, the first arc-shaped surface 120e, the second arc-shaped surface 120f, and the second abutting surface 120c form an avoidance arc-shaped groove 120a. After the sprue hook 150 is inserted into the first mounting hole 111a, the connector 120 is installed on the first mounting plate 110, and one end of the sprue hook is embedded in the avoidance arc-shaped groove 120a to achieve precise positioning and clamping. The connector 120 and the first mounting plate 110 clamp the sprue hook 150 to prevent the sprue hook 150 from axially moving during demolding.

[0069] In at least one embodiment of this application, the first arcuate surface 120e and the second arcuate surface 120f are disposed opposite to each other, and the first arcuate surface 120e and the second arcuate surface 120f are far apart from each other.

[0070] Please refer to Figures 2-10 In this embodiment, the first arc-shaped surface 120e and the second arc-shaped surface 120f are set opposite to each other, meaning that their arc-shaped opening directions are opposite and far apart from each other, forming a "V"-shaped groove structure. After the head of the sprue hook 150 is inserted, its two sides or arc-shaped parts will respectively fit into the two arc-shaped surfaces in opposite directions. With the second abutting surface 120c of the connector 120, a multi-faceted space-enclosed embedding area is finally formed.

[0071] The first arc-shaped surface 120e and the second arc-shaped surface 120f, which are set in opposite directions, form an angled structure that can constrain the sprue hook 150 in the arc-shaped groove 120a and prevent the sprue hook 150 from being displaced in the arc-shaped groove 120a. At the same time, the first arc-shaped surface 120e and the second arc-shaped surface 120f are easy to process.

[0072] Secondly, during the installation process, the connector 120 can be installed onto the first mounting plate 110 by being guided by the first arc-shaped surface 120e or the second arc-shaped surface 120f, so as to facilitate installation and fixation and improve assembly efficiency.

[0073] In at least one embodiment of this application, there are at least two mounting portions 111 and at least two clearance arc grooves 120a, with each clearance arc groove 120a corresponding to one of the mounting portions 111.

[0074] Please refer to Figures 2-10 In this embodiment, each of the avoidance arc grooves 120a corresponds to a certain mounting part 111, so that multiple sprue hooks 150 are positioned and fixed by a mounting part 111, so that multiple sprue hooks 150 can be distributed and installed on multiple mounting parts 111, so that demolding can be performed by multiple sprue hooks 150 together, resulting in a better demolding effect.

[0075] In at least one embodiment of this application, the first mounting plate 110 has a first through groove 111f, the mounting part 111 is located on the peripheral wall of the first through groove 111f, and the connector 120 is partially received in the first through groove 111f and extends through the first through groove 111f to the outside.

[0076] Please refer to Figures 2-10 In this embodiment, a first through groove 111f is formed on the first mounting plate 110, the mounting part 111 is disposed on the peripheral wall of the through groove, and the connector 120 is partially embedded in and passes through the first through groove 111f, extending to the outside of the first mounting plate 110, thus forming a structure through.

[0077] A portion of the connector 120 is housed inside the first through groove 111f, and a portion extends outward through the first through groove 111f to fix the connector 120 onto the first mounting plate 110, thereby installing one end of the sprue hook between the connector 120 and the first mounting plate 110, and the connector 120 and the first mounting plate 110 clamp the sprue hook 150.

[0078] In at least one embodiment of this application, the first mounting plate 110 has a first fixing hole 111g, and the connector 120 has a second fixing hole 120d;

[0079] The fixing structure 100 for the water inlet hook also includes:

[0080] The fastener 130 has one end abutting against the connector 120, and the other end extends through the second fixing hole 120d to the first fixing hole 111g and is fixed to the first mounting plate 110.

[0081] Please refer to Figures 2-10 In this embodiment, one end of the fastener 130 abuts against the mounting plate, and the other end passes through the second fixing hole 120d of the connector 120, and finally extends into the first mounting hole 111a and is threadedly fixed to the first mounting plate 110, thereby fixing the sprue hook 150 between the first mounting plate 110 and the connector 120.

[0082] One end of the fastener 130 abuts against the surface of the first mounting plate 110 to form a clamping effect, and the other end passes through the connector 120 to lock its axial movement and rotation. The fastener 130 is a bolt or screw, the first fixing hole 111g is a screw hole, and the second fixing hole 120d is a through round hole.

[0083] Place the sprue hook 150 on the mounting part 111, so that one end of the sprue hook 150 passes through the first mounting hole 111a. Insert the connector 120 into the first through groove 111f. At this time, one end of the sprue hook abuts against the connector 120 and the first mounting plate 110 respectively. Then, the fixing member 130 passes through the second fixing hole 120d and extends into the first fixing hole 111g, and is threaded to the first mounting plate 110, thereby fixing the sprue hook 150 between the first mounting plate 110 and the connector 120 to complete the positioning and installation of the sprue hook, which facilitates the installation and fixing of the sprue hook.

[0084] In at least one embodiment of this application, the fixing structure 100 for the sprue hook further includes:

[0085] The second mounting plate 140 has a second mounting hole 140a. The second mounting plate 140 is fixedly connected to the first mounting plate 110. The second mounting hole 140a communicates with the first mounting hole 111a, and the axes of the first mounting hole 111a and the second mounting hole 140a are collinear.

[0086] One end of the sprue hook abuts against the installation space 120b, and the other end extends to the outside through the first installation hole 111a and the second installation hole 140a.

[0087] Please refer to Figures 2-10 In this embodiment, one end of the sprue hook 150 is inserted into the mounting space 120b for initial positioning, and the other end extends out of the mounting space 120b, passes through the first mounting hole 111a and the second mounting hole 140a in sequence, and finally extends to the outside for operation or to cooperate with mold components to separate the finished product after injection molding.

[0088] The first mounting hole 111a and the second mounting hole 140a are set with their axes collinear to ensure that the mounting angle of the sprue hook 150 is accurate and consistent, thereby ensuring the installation accuracy of the sprue hook.

[0089] In at least one embodiment of this application, the second mounting plate 140 has a clearance hole 140b on the side away from the first mounting plate 110. The clearance hole 140b communicates with the second mounting hole 140a and is used to accommodate the hook of the water inlet hook 150 away from the first mounting plate 110.

[0090] Please refer to Figures 2-10In this embodiment, after the sprue hook 150 is installed, the end away from the first mounting plate 110 is the hook part. An avoidance hole 140b is provided on the side of the second mounting plate 140 away from the first mounting plate 110 to reserve structural space for the outer end of the hook. The hook part of the sprue hook is located in the avoidance hole 140b and there is a gap between it and the avoidance hole 140b, so that the hook part can directly hook the finished product, resulting in a better separation effect.

[0091] It should be noted that the clearance hole 140b is a circular hole formed by the second mounting plate 140 being recessed towards the side closer to the first mounting plate 110, and the diameter of the clearance hole 140b is larger than that of the second mounting hole 140a.

[0092] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A fixing structure for a sprue hook, characterized in that, include: A first mounting plate is provided with a mounting part, and the mounting part has a first mounting hole; A connector is mounted on the first mounting plate, and the peripheral surface of the connector is provided with an open clearance arc groove. The inner wall of the clearance arc groove and the first mounting plate form an installation space, and the installation space communicates with the first mounting hole. One end of the sprue hook abuts against the installation space, and the other end extends through the first installation hole to the outside.

2. The fixing structure for the sprue hook according to claim 1, characterized in that, The mounting part has an abutment groove, which communicates with the first mounting hole. The sprue hook abuts against the inner wall of the abutment groove and the inner wall of the avoidance arc groove.

3. The fixing structure for the sprue hook according to claim 2, characterized in that, The abutment groove has a first abutment surface, the avoidance arc groove has a second abutment surface, and one end of the sprue hook abuts between the first abutment surface and the second abutment surface respectively to fix the sprue hook.

4. The fixing structure for the sprue hook according to claim 3, characterized in that, The abutment groove includes a first arc-shaped surface and a second arc-shaped surface that connect with the first abutment surface. The first arc-shaped surface, the second arc-shaped surface, and the second abutment surface together form the avoidance arc-shaped groove.

5. The fixing structure for the sprue hook according to claim 4, characterized in that, The first arc-shaped surface is arranged opposite to the second arc-shaped surface, and the first arc-shaped surface and the second arc-shaped surface are far apart from each other.

6. The fixing structure for the sprue hook according to claim 1, characterized in that, There are at least two mounting parts and at least two clearance arc grooves, with each clearance arc groove corresponding to one of the mounting parts.

7. The fixing structure for the sprue hook according to claim 1, characterized in that, The first mounting plate has a first through groove, the mounting part is located on the peripheral wall of the first through groove, and the connecting part is housed in the first through groove and extends through the first through groove to the outside.

8. The fixing structure for the sprue hook according to claim 7, characterized in that, The first mounting plate has a first fixing hole, and the connector has a second fixing hole; The fixing structure of the sprue hook also includes: The fastener has one end abutting against the connector, and the other end extending through the second fixing hole to the first fixing hole and being fixed to the first mounting plate.

9. The fixing structure for the sprue hook according to claim 1, characterized in that, The fixing structure of the sprue hook also includes: The second mounting plate has a second mounting hole. The second mounting plate is fixedly connected to the first mounting plate. The second mounting hole communicates with the first mounting hole, and the axes of the first mounting hole and the second mounting hole are collinear. One end of the sprue hook abuts against the installation space, while the other end extends through the first and second installation holes to the outside.

10. The fixing structure for the sprue hook according to claim 9, characterized in that, The second mounting plate has a clearance hole on the side away from the first mounting plate. The clearance hole communicates with the second mounting hole and is used to accommodate the hook needle of the water inlet that is away from the first mounting plate.

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