Heater mounting structure for injection molding machine

Abstract

According to the heater mounting structure for the injection molding machine, when a heating ring body is mounted on a screw charging barrel, a locking insertion plate is correspondingly inserted into an insertion hole, and an inclined plane insertion head in an elastic locking assembly is slidably inserted into a locking hole in the locking insertion plate under the elastic force action of a spring; due to the fact that one end of the inclined plane of the inclined plane plug is of the right triangle structure, when the locking plugboard continues to be inserted, the side edge of the locking hole can extrude the inclined plane of the inclined plane plug to enable the inclined plane plug to retreat from the locking hole until the inclined plane plug is inserted into the next locking hole, and the bottom face of the inclined plane plug is a plane and can stably abut against the locking hole. The locking inserting plate is prevented from being pulled out of the inserting hole so as to ensure that the first mounting plate and the second mounting plate are initially and stably connected, then the first mounting plate and the second mounting plate are further fixedly connected through the fastening bolt, and therefore it can be ensured that the heating ring mounting structure is stably mounted; the situation that the heating ring looses and makes contact with the outer side wall of the screw charging barrel not tightly enough is avoided, and the heat transfer efficiency of the heating ring is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of injection molding machine heaters, and specifically relates to a heater installation structure for an injection molding machine. Background Art

[0002] In the modern plastic processing industry, injection molding machines are one of the important production equipment. The injection molding machine injects molten plastic materials into the mold through a screw barrel to form various plastic products. In order to make the plastic materials in the screw barrel reach a suitable molten state, heating coils are usually installed on the outer surface of the screw barrel to provide the required heat. The existing installation structure of the heating coil is usually two groups of bolts arranged on one side of the heating coil. During installation, the heating coil needs to be sleeved on the screw barrel and the bolts are tightened in sequence to fix it, so that the heating coil is in close contact with the outer side wall of the screw barrel. However, this installation structure is not stable enough. The vibration generated during the operation of the injection molding machine may cause the bolts to loosen, and then the heating coil loosens and the contact with the outer side wall of the screw barrel is not close enough, reducing the heat transfer efficiency and affecting the heating efficiency of the screw barrel of the injection molding machine. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of this application is to provide a heater installation structure for an injection molding machine to solve the problems raised in the above background art.

[0004] According to one aspect of this application, a heater installation structure for an injection molding machine includes a heating coil body, a first mounting plate, and a second mounting plate. An opening is provided on the heating coil body, and the heating coil body is unfolded from the opening and installed on the outer side wall of the screw barrel of the injection molding machine. A first mounting plate is fixedly provided on the upper side of the outer side wall of the heating coil body at the opening position, and a second mounting plate is fixedly provided on the lower side of the outer side wall of the heating coil body at the opening position. A plurality of locking insertion plates are vertically and evenly fixedly provided along the length direction at the outer bottom of the first mounting plate. Through holes are respectively formed on the second mounting plate corresponding to each locking insertion plate position. The shape and size of the locking insertion plate are adapted to the shape and size of the through hole. A plurality of locking holes are evenly and equidistantly formed along the vertical direction on each locking insertion plate. A resilient locking assembly is provided at each through hole position on the second mounting plate. When the heating coil body is installed on the screw barrel, each locking insertion plate is inserted into the corresponding through hole and the resilient locking assembly is clamped into the locking hole. The first mounting plate and the second mounting plate are also fixedly connected by fastening bolts.

[0005] Preferably, the elastic locking assembly includes an inclined plug, a sliding rod, a spring and a pull rod. On one side of the inner wall of each jack on the second mounting plate, a retraction groove is vertically formed. The inclined plug is slidably disposed in the retraction groove. One end of the inclined plug with an inclined surface is a right triangle structure and faces the jack. The other end of the inclined plug is fixedly connected to one end of the sliding rod. A spring is sleeved on the sliding rod and the spring is located between the inclined plug and the bottom of the retraction groove. The other end of the sliding rod slidably penetrates through the bottom of the retraction groove and communicates with the outside of the second mounting plate. The end of the sliding rod away from the inclined plug is fixedly connected to the pull rod. The pull rod can pull the sliding rod and drive the inclined plug to slide away from the jack against the elastic force of the spring.

[0006] Preferably, when the heating coil body is installed on the screw barrel, each locking plug board is inserted into its corresponding jack, and one end of the inclined surface of the inclined plug can be slidably inserted into the locking hole under the elastic force of the spring. The setting direction of the inclined surface of the inclined plug is opposite to the insertion direction of the locking plug board. During the process of inserting the locking plug board into the jack, the side of the locking hole can squeeze the inclined surface of the inclined plug, so that the inclined plug retracts into the retraction groove.

[0007] Preferably, the sliding direction of the inclined plug is perpendicular to the insertion direction of the locking plug board.

[0008] Preferably, the pull rod is vertically arranged and its upper end is fixedly connected to the end of the sliding rod located outside the second mounting plate. A limiting opening groove is formed on the second mounting plate at the moving position of the pull rod.

[0009] Preferably, a linkage rod is fixedly arranged between all the pull rods.

[0010] Preferably, at least one mounting hole is formed on the first mounting plate, and threaded holes are formed on the second mounting plate at the positions corresponding to each mounting hole. When installing the heating coil body, the fastening bolt passes through the mounting hole and is threadedly connected to the threaded hole, and a spring washer is arranged between the fastening bolt and the mounting hole.

[0011] Preferably, both the first mounting plate and the second mounting plate extend horizontally along the axis direction of the heating coil body.

[0012] The advantages of the present application compared with the prior art are as follows: For a heater installation structure for an injection molding machine in the present application, through the insertion connection between the locking plug arranged on the first mounting plate at the opening of the heating coil body and the jack arranged on the second mounting plate, and the insertion lock connection between the elastic locking component at the jack and the locking hole on the locking plug. That is, when the heating coil body is installed on the screw barrel, the locking plug is correspondingly inserted into the jack. During this process, the inclined plug in the elastic locking component slides and inserts into the locking hole on the locking plug under the elastic force of the spring. Since one end of the inclined surface of the inclined plug is a right triangle structure, when the locking plug continues to be inserted, the side of the locking hole can squeeze the inclined surface of the inclined plug to make it withdraw from the locking hole until the inclined plug inserts into the next locking hole, and the bottom surface of the inclined plug is a plane and can stably abut against the locking hole to prevent the locking plug from being pulled out of the jack, so as to ensure the initial stable connection between the first mounting plate and the second mounting plate. Then, the first mounting plate and the second mounting plate are further fixedly connected by fastening bolts. During this process, the locking plug continues to be inserted into the jack and makes the inclined plug insert into another locking hole again, so as to ensure the stable installation of the heating coil installation structure, avoid the loosening of the heating coil resulting in insufficient close contact with the outer wall of the screw barrel, and ensure the heat transfer efficiency of the heating coil. Description of the Drawings

[0013] Figure 1 is a three-dimensional view of a heater for an injection molding machine installed on a screw barrel according to an embodiment of the present application.

[0014] Figure 2 is a three-dimensional view of a heater installation structure for an injection molding machine according to an embodiment of the present application.

[0015] Figure 3 is a front view of a heater installation structure for an injection molding machine according to an embodiment of the present application.

[0016] Figure 4 is a side cross-sectional view of the locking plug and the jack of a heater installation structure for an injection molding machine according to an embodiment of the present application.

[0017] Figure 5 is a side cross-sectional view of the fastening bolt of a heater installation structure for an injection molding machine according to an embodiment of the present application.

[0018] Reference Numerals: 1. Heating Coil Body; 2. First Mounting Plate; 3. Second Mounting Plate; 4. Locking Plug; 41. Locking Hole; 5. Jack; 6. Elastic Locking Component; 61. Inclined Plug; 62. Sliding Rod; 63. Spring; 64. Pull Rod; 65. Linking Rod; 7. Fastening Bolt; 8. Yielding Groove; 9. Limiting Opening Groove; 10. Mounting Hole; 11. Threaded Hole; 12. Spring Washer; 13. Screw Barrel. Detailed Description of the Embodiment

[0019] In order to make the content of this application easier to be clearly understood, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the Figure 4 accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0020] Such as Figures 1 to 5As shown in the figure, a heater installation structure for an injection molding machine includes a heating coil body 1, a first mounting plate 2, and a second mounting plate 3. The heating coil body 1 is provided with an opening, and the heating coil body 1 is unfolded from the opening and installed on the outer side wall of the screw barrel 13 of the injection molding machine. A first mounting plate 2 is fixedly provided on the upper side of the outer side wall of the heating coil body 1 at the opening position, and a second mounting plate 3 is fixedly provided on the lower side of the outer side wall of the heating coil body 1 at the opening position. Both the first mounting plate 2 and the second mounting plate 3 are horizontally extended along the axis direction of the heating coil body 1. A plurality of locking plug plates 4 are vertically and fixedly provided at equal intervals along the length direction of the outer bottom of the first mounting plate 2. Through holes 5 are respectively formed in the second mounting plate 3 corresponding to the positions of each locking plug plate 4. The shape and size of the locking plug plate 4 are adapted to the shape and size of the through hole 5, so that the locking plug plate 4 can be inserted into the through hole 5 during installation. A plurality of locking holes 41 are evenly and equidistantly formed in each locking plug plate 4 along its vertical direction, and the plurality of locking holes 41 are closely arranged and the adjacent spacing is small to ensure that the inclined plug 61 can be successfully inserted into the locking hole 41. A spring-actuated locking assembly 6 is provided at each through hole 5 position on the second mounting plate 3. Specifically, the spring-actuated locking assembly 6 includes an inclined plug 61, a sliding rod 62, a spring 63, and a pull rod 64. A relief groove 8 is vertically formed on one side of the inner wall of each through hole 5 on the second mounting plate 3. The inclined plug 61 is slidably arranged in the relief groove 8. The sliding direction of the inclined plug 61 is perpendicular to the insertion direction of the locking plug plate 4. The inclined end of the inclined plug 61 is a right triangle structure and faces the through hole 5. The other end of the inclined plug 61 is fixedly connected to one end of the sliding rod 62. A spring 63 is sleeved on the sliding rod 62 and the spring 63 is located between the inclined plug 61 and the bottom of the relief groove 8. The other end of the sliding rod 62 slidably penetrates through the bottom of the relief groove 8 and communicates with the outside of the second mounting plate 3. The pull rod 64 is vertically arranged and its upper end is fixedly connected to the end of the sliding rod 62 located outside the second mounting plate 3. A limiting opening groove 9 is formed at the moving position of the pull rod 64 on the second mounting plate 3. The setting of the limiting opening groove 9 can ensure that the pull rod 64 can move along with the sliding of the inclined plug 61, and can also prevent the inclined plug 61 from entering the through hole 5 excessively when the locking plug plate 4 is not inserted into the through hole 5. A linkage rod 65 is fixedly provided between all the pull rods 64. This setting can drive the pull rod 64 to pull the sliding rod 62 and drive the inclined plug 61 to slide away from the through hole 5 against the elastic force of the spring 63 by pulling the linkage rod 65, so that the locking plug plate 4 can be withdrawn from the through hole 5 when the heating coil is removed;In a specific implementation, when the heating coil body 1 is installed on the screw barrel 13, each locking plug 4 is correspondingly inserted into the jack 5. During this process, the inclined plug 61 in the elastic locking component 6 slides and inserts into the locking hole 41 on the locking plug 4 under the elastic force of the spring 63. Since one end of the inclined surface of the inclined plug 61 is a right triangle structure and the setting direction of the inclined surface of the inclined plug 61 is opposite to the insertion direction of the locking plug 4, when the locking plug 4 continues to be inserted, the side of the locking hole 41 can squeeze the inclined surface of the inclined plug 61 to make it retract into the retraction groove 8 and then withdraw from the locking hole 41 until the inclined plug 61 inserts into the next locking hole 41. Moreover, the bottom surface of the inclined plug 61 is a plane and can stably abut against the locking hole 41 to prevent the locking plug 4 from being pulled out of the jack 5, so as to ensure the initial stable connection between the first mounting plate 2 and the second mounting plate 3. In addition, the first mounting plate 2 and the second mounting plate 3 are also fixedly connected by fastening bolts 7. Specifically, at least one mounting hole 10 is provided on the first mounting plate 2, and threaded holes 11 are provided at positions corresponding to each mounting hole 10 on the second mounting plate 3. When installing the heating coil body 1, the fastening bolts 7 pass through the mounting holes 10 and are threadedly connected with the threaded holes 11, and spring washers 12 are provided between the fastening bolts 7 and the mounting holes 10.

[0021] In summary, through the insertion connection of the locking plug 4 provided on the first mounting plate 2 at the opening of the heating coil body 1 and the jack 5 provided on the second mounting plate 3, and the insertion and locking connection of the elastic locking component 6 at the jack 5 and the locking hole 41 on the locking plug 4, that is, when the heating coil body 1 is installed on the screw barrel 13, the locking plug 4 is correspondingly inserted into the jack 5. During this process, the inclined plug 61 in the elastic locking component 6 slides and inserts into the locking hole 41 on the locking plug 4 under the elastic force of the spring 63. Since one end of the inclined surface of the inclined plug 61 is a right triangle structure, when the locking plug 4 continues to be inserted, the side of the locking hole 41 can squeeze the inclined surface of the inclined plug 61 to make it withdraw from the locking hole 41 until the inclined plug 61 inserts into the next locking hole 41. Moreover, the bottom surface of the inclined plug 61 is a plane and can stably abut against the locking hole 41 to prevent the locking plug 4 from being pulled out of the jack 5, so as to ensure the initial stable connection between the first mounting plate 2 and the second mounting plate 3. Then, the first mounting plate 2 and the second mounting plate 3 are further fixedly connected by the fastening bolts 7. During this process, the locking plug 4 continues to be inserted into the jack 5 and the inclined plug 61 inserts into another locking hole 41 again, so as to ensure the stable installation of the heating coil installation structure, avoid the loosening of the heating coil resulting in insufficient close contact with the outer wall of the screw barrel 13, and ensure the heat transfer efficiency of the heating coil.

[0022] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that without departing from the spirit and scope defined by the claims of the present application, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features.

Claims

1. A heater installation structure for an injection molding machine, comprising a heating coil body (1), a mounting plate 1 (2) and a mounting plate 2 (3), wherein the heating coil body (1) is provided with an opening, and the heating coil body (1) is unfolded from the opening and installed on the outer wall of a screw barrel (13) of the injection molding machine, the upper side of the outer wall of the heating coil body (1) at the opening position is fixedly provided with a mounting plate 1 (2), and the lower side of the outer wall of the heating coil body (1) at the opening position is fixedly provided with a mounting plate 2 (3), wherein the heating coil body (1) is provided with a mounting plate 2 (3), wherein the heating coil body (1) is provided with a mounting plate 3 (4), wherein the heating coil body (1) is provided with a mounting plate 1 (2) and a mounting plate 2 (3) are fixedly provided on the outer wall of the heating coil body (1) at the opening position. A plurality of locking plug plates (4) are evenly and equidistantly fixed vertically on the outer bottom of the mounting plate 1 (2) along its length direction; a plug hole (5) is penetrated through the mounting plate 2 (3) at the position corresponding to each of the locking plug plates (4); the shape and size of the locking plug plates (4) are matched with the shape and size of the plug holes (5); a plurality of locking holes (41) are evenly and equidistantly opened on each of the locking plug plates (4) along its vertical direction; a resilient locking assembly (6) is provided at the position of each of the plug holes (5) on the mounting plate 2 (3); when the heating coil body (1) is mounted on the screw barrel (13), each of the locking plug plates (4) is inserted into the corresponding plug hole (5) and the resilient locking assembly (6) is clamped in the locking hole (41); the mounting plate 1 (2) and the mounting plate 2 (3) are also fixedly connected by a fastening bolt (7).

2. A heater installation structure for an injection molding machine according to claim 1, characterized in that: The spring locking assembly (6) comprises a bevel plug (61), a sliding rod (62), a spring (63) and a pull rod (64); a retreat groove (8) is vertically opened on one side of the inner wall of each of the jacks (5) on the second mounting plate (3); the bevel plug (61) is slidably arranged in the retreat groove (8); one end of the bevel of the bevel plug (61) is a right-angled triangle structure and is arranged toward the jack (5); the other end of the bevel plug (61) is fixedly connected to one end of the sliding rod (62); a spring (63) is sleeved on the sliding rod (62); A spring (63) is provided and the spring (63) is located between the inclined plug (61) and the bottom of the retreat groove (8); the other end of the sliding rod (62) slides through the bottom of the retreat groove (8) and is connected to the outer side of the second mounting plate (3); the end of the sliding rod (62) away from the inclined plug (61) is fixedly connected to a pull rod (64); the pull rod (64) can pull the sliding rod (62) and drive the inclined plug (61) to overcome the elastic force of the spring (63) and slide in a direction away from the socket (5).

3. A heater installation structure for an injection molding machine according to claim 2, characterized in that: When the heating coil body (1) is installed on the screw barrel (13), each of the locking plug plates (4) is inserted into the corresponding insertion hole (5), and one end of the inclined surface of the inclined plug (61) can be slidably inserted into the locking hole (41) under the elastic force of the spring (63), and the inclined surface of the inclined plug (61) is arranged in a direction opposite to the insertion direction of the locking plug plate (4). When the locking plug plate (4) is inserted into the insertion hole (5), the side of the locking hole (41) can squeeze the inclined surface of the inclined plug (61), so that the inclined plug (61) retreats into the retreat groove (8).

4. A heater installation structure for an injection molding machine according to claim 2, characterized in that: The sliding direction of the inclined plug (61) is perpendicular to the insertion direction of the locking plug plate (4).

5. The heater installation structure for an injection molding machine according to claim 2, characterized in that: The pull rod (64) is vertically arranged and its upper end is fixedly connected to one end of the sliding rod (62) located on the outer side of the second mounting plate (3). A limited opening groove (9) is provided on the second mounting plate (3) at the moving position of the pull rod (64).

6. A heater installation structure for an injection molding machine according to claim 5, characterized in that: A linking rod (65) is fixedly arranged between all the pull rods (64).

7. The heater installation structure for an injection molding machine according to claim 1, characterized in that: At least one mounting hole (10) is provided on the mounting plate one (2), and a threaded hole (11) is provided on the mounting plate two (3) at a position corresponding to each mounting hole (10); when the heating coil body (1) is installed, the fastening bolt (7) passes through the mounting hole (10) and is threadedly connected to the threaded hole (11), and a spring gasket (12) is provided between the fastening bolt (7) and the mounting hole (10).

8. The heater installation structure for an injection molding machine according to claim 1, characterized in that: The first mounting plate (2) and the second mounting plate (3) are both arranged to extend horizontally along the axial direction of the heating coil body (1).

Images