A mold clamping device for foam molding machine

Abstract

The present application discloses a mold clamping device for a foam molding machine, which belongs to the field of foam molding machine design. It includes: a foam molding machine body; four groups of guide columns, one end of the four groups of guide columns is fixed to the foam molding machine body; a first bracket is fixed to the foam molding machine body, the first bracket forms a first mounting surface, and the other ends of the four groups of guide columns are fixed to the four corners of the first mounting surface; a second bracket forms a second mounting surface, the second mounting surface is opposite to the first mounting surface, and the second bracket slides with the four groups of guide columns; a power piece makes the second bracket close to and away from the first bracket. The beneficial effect of the present application is: it provides a mold clamping device for a foam molding machine in which a cavity is mounted on a first mounting surface, a core is mounted on a second mounting surface, and four groups of guide rods are positioned on the four corners of the first mounting surface, so that when the second bracket slides along the guide rods, the four groups of guide rods form four-point positioning for the second bracket, the core and cavity are precisely clamped, and the injection molded product meets the standards.

Description

Technical Field

[0001] The present application relates to the field of foam molding machine design, and in particular to a mold clamping device for a foam molding machine. Background Art

[0002] The working principle of the foam molding machine is similar to that of a syringe for injection. It uses the thrust of the screw (or plunger) to inject the plasticized molten state (i.e. viscous flow state) plastic into the closed mold cavity, and obtains the product after solidification. Injection molding is a cyclic process, and each cycle mainly includes: quantitative feeding - melting and plasticization - pressure injection - mold filling and cooling - mold opening and taking out the parts. After taking out the plastic parts, the mold is closed again for the next cycle.

[0003] Whether the injection molding is successful depends on many factors, one of which is the accuracy of the mold closing between the core and the cavity. Usually, the mold is closed by using equipment such as a cylinder to push the core toward the cavity, which will cause the edge of the core to rotate and shift during the movement. After the mold is closed, the core and the cavity are not completely aligned, resulting in the injection molded product not meeting the standards. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a foam molding machine mold closing device, including: a foam molding machine body; guide columns, which are arranged in four groups, and one end of the four groups of guide columns is fixed to the foam molding machine body; a first bracket, which is fixed to the foam molding machine body, the first bracket forms a first mounting surface, and the other ends of the four groups of guide columns are fixed to the four corners of the first mounting surface; a second bracket, which forms a second mounting surface, the second mounting surface is opposite to the first mounting surface, and the second bracket slides with the four groups of guide columns; a power piece, which makes the second bracket approach and move away from the first bracket.

[0006] Furthermore, the second bracket includes: a frame body, a connecting structure and a roller; the foam molding machine body includes: a guide rail; the axis of the guide rail is parallel to the axis of the guide column; the frame body is slidably connected to the four guide columns, the lower end of the frame body is connected to the connecting structure, the connecting structure is rotatably connected to the roller, and the roller is in contact with the guide rail.

[0007] Furthermore, the connection structure includes: a base, a rotating block and a spring; the base is fixed to the lower end of the frame body, one end of the rotating block is rotatably connected to the base, the middle part of the rotating block is rotatably connected to the roller, the other end of the rotating block is fixed to the lower end of the spring, and the upper end of the spring is fixed to the base.

[0008] Furthermore, an insertion rod is formed at the lower end of the base, and a clearance hole is longitudinally formed at one end of the rotating block that fixes the spring. The diameter of the clearance hole is larger than the diameter of the insertion rod, the spring surrounds the insertion rod, and the insertion rod is inserted into the clearance hole.

[0009] Furthermore, the foam molding machine body includes: a frame, a limit rod and a limit block; one end of the limit rod is fixed to the frame; the other end of the limit rod is fixed to the limit block; the axis of the limit rod is parallel to the axis of the guide column; the frame body forms a limit hole, the diameter of the limit block is larger than the aperture of the limit hole, and the limit hole is slidably matched with the limit rod.

[0010] Furthermore, the frame body comprises: ribs and a frame; the ribs are arranged in multiple groups, the multiple groups of ribs cross each other, and the ends of the ribs are fixed to the inner wall of the frame.

[0011] Furthermore, the ribs form weight-reducing holes.

[0012] The beneficial effects of this application are:

[0013] The cavity is installed on the first mounting surface, the core is installed on the second mounting surface, and four groups of guide rods are positioned on the four corners of the first mounting surface. When the second bracket slides along the guide rods, the four groups of guide rods form four-point positioning for the second bracket, so that the core and the cavity are accurately molded and the injection molded product meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0015] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0016] In the attached picture:

[0017] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0018] Figure 2It is a structural schematic diagram of a part of the embodiment, mainly showing the connection structure;

[0019] Figure 3 It is a structural schematic diagram of a part of the embodiment, mainly showing the connection relationship between the second bracket, the limiting rod and the limiting block;

[0020] Figure 4 It is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the second bracket.

[0021] Reference numerals:

[0022] 1. Foam molding machine body; 11. Guide rail; 12. Frame; 13. Limit rod; 14. Limit block; 2. Guide column; 3. First bracket; 4. Second bracket; 41. Frame body; 411. Rib plate; 412. Frame; 42. Connection structure; 421. Base; 422. Rotating block; 423. Spring; 43. Roller; 5. Power part. DETAILED DESCRIPTION

[0023] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0024] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0025] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0026] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0027] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0028] Reference Figure 1-4 ,

[0029] A mold closing device for a foam molding machine comprises: a foam molding machine body 1, a guide column 2, a first bracket 3, a second bracket 4 and a power member 5. The first bracket 3 is fixed to the foam molding machine body 1 by bolts, and the first bracket 3 forms a first mounting surface, and the first mounting surface is used to install the cavity of the mold. The second bracket 4 forms a second mounting surface relative to the first mounting surface, and the second mounting surface is used to install the core of the mold. The power member 5 can be selected from one of a cylinder and an electric push rod, and the present embodiment preferably uses a cylinder. The housing of the power member 5 is fixed to the foam molding machine body 1 by bolts, and the output end of the power member 5 is fixed to the second bracket 4 by bolts, and the power member 5 is used to push the second bracket 4 close to the first bracket 3 to achieve the mold closing of the core and the cavity, and to pull the second bracket 4 away from the first bracket 3 to achieve the separation of the core and the cavity. The foam molding machine body 1 is a prior art, and is used to perform injection molding on the gap between the core and the cavity after the mold is closed. Four groups of guide columns 2 are provided, one in each group, and the axes of the four guide columns 2 are parallel to each other. One ends of the four guide columns 2 are inserted into the four corners of the first mounting surface and fixed to the first bracket 3, and the other ends of the four guide columns 2 pass through the second bracket 4 and are fixed to the foam molding machine body 1. The second bracket 4 is slidably matched with the four guide columns 2. The four guide columns 2 guide and stabilize the second bracket 4 to prevent the second bracket 4 from rotating and deviating when the power member 5 moves the second bracket 4.

[0030] Specifically, the second bracket 4 includes: a frame body 41, a connecting structure 42 and a roller 43. The foam molding machine body 1 includes: a guide rail 11. The guide rail 11 is placed below the frame body 41, and the axis of the guide rail 11 is parallel to the axis of the guide column 2. The frame body 41 is slidably connected to the four guide columns 2, and the lower end of the frame body 41 is connected to the connecting structure 42, and the connecting structure 42 is rotationally connected to the roller 43, and the roller 43 is in contact with the guide rail 11. When the power member 5 pushes and pulls the second bracket 4, the frame body 41 reciprocates along the guide rail 11 through the connecting structure 42 and the roller 43, and the connecting structure 42 and the roller 43 form a support for the frame body 41. The roller 43 rolls on the guide rail 11 to share part of the weight of the frame body 41 for the four guide columns 2, reducing the wear of the frame body 41 on the guide columns 2, and also improving the stability of the movement of the frame body 41.

[0031] Specifically, the connection structure 42 includes: a base 421, a rotating block 422 and a spring 423. The base 421 is fixed to the lower end of the frame body 41 by bolts, one end of the rotating block 422 is rotatably connected to the base 421 by a pin, the middle of the rotating block 422 is rotatably connected to the roller 43, the other end of the rotating block 422 is welded and fixed to the lower end of the spring 423, and the upper end of the spring 423 is fixed to the welding base 421. A core is installed on the frame body 41. When the weight of the core is too large, the guide column 2 will be slightly bent. At this time, the weight of the core and the frame body 41 is transferred to the roller 43 through the base 421 and the rotating block 422. At the same time, one end of the rotating block 422 rotates around the pin, and the other end compresses the spring 423 to relieve the pressure of the roller 43 on the guide rail 11.

[0032] Specifically, the lower end of the base 421 forms an insertion rod, and one end of the rotating block 422 that fixes the spring 423 forms a clearance hole in the longitudinal direction. The aperture of the clearance hole is larger than the diameter of the insertion rod, and the spring 423 surrounds the insertion rod, and the insertion rod is inserted into the clearance hole. When the spring 423 is rotated and compressed by the rotating block 422, the insertion rod is used to prevent the middle part of the spring 423 from being excessively compressed and excessively bent to one side, causing the spring 423 to break.

[0033] Specifically, the foam molding machine body 1 includes: a frame 12, a limit rod 13 and a limit block 14. The first bracket 3 is fixed to the frame 12 by bolts, one end of the limit rod 13 is welded and fixed to the frame 12, and the other end of the limit rod 13 points to the first mounting surface and is welded and fixed to the limit block 14. The axis of the limit rod 13 is parallel to the axis of the guide column 2, and the frame body 41 forms a limit hole with the same diameter as the limit rod 13. The diameter of the limit block 14 is larger than the aperture of the limit hole, and the limit hole and the limit rod 13 are slidably matched. When the power member 5 pulls the second bracket 4 away from the first bracket 3, the second bracket 4 moves as far as to abut against the limit block 14.

[0034] Specifically, the frame body 41 includes: ribs 411 and a frame 412. The ribs 411 are arranged in multiple groups, specifically five groups, three groups of ribs 411 are longitudinally arranged in the middle of the frame 412, two groups of ribs 411 are transversely arranged in the middle of the frame 412, and the five groups of ribs 411 intersect each other. The ends of the ribs 411 are welded and fixed to the inner wall of the frame 412. A plurality of weight-reducing holes are also formed on the ribs 411, thereby reducing the weight of the entire frame body 41, facilitating the pushing of the power member 5, and reducing the extrusion of the guide column 2 and the guide rail 11.

[0035] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A mold clamping device for a foam molding machine, characterized in that: include: Foam molding machine body; Guide columns, four groups are provided, one end of the four groups of guide columns is fixed to the foam molding machine body; A first bracket is fixed to the foam molding machine body, the first bracket forms a first mounting surface, and the other ends of the four groups of guide posts are fixed to the four corners of the first mounting surface; A second bracket forms a second mounting surface, the second mounting surface is opposite to the first mounting surface, and the second bracket is slidably matched with the four groups of guide posts; The power member enables the second bracket to approach and move away from the first bracket.

2. The mold clamping device of the foam molding machine according to claim 1, characterized in that: The second bracket includes: a frame body, a connecting structure and a roller; the foam molding machine body includes: a guide rail; the axis of the guide rail is parallel to the axis of the guide column; the frame body is slidably connected to the four guide columns, the lower end of the frame body is connected to the connecting structure, the connecting structure is rotatably connected to the roller, and the roller is in contact with the guide rail.

3. The mold clamping device of the foam molding machine according to claim 2, characterized in that: The connection structure includes: a base, a rotating block and a spring; the base is fixed to the lower end of the frame body, one end of the rotating block is rotatably connected to the base, the middle part of the rotating block is rotatably connected to the roller, the other end of the rotating block is fixed to the lower end of the spring, and the upper end of the spring is fixed to the base.

4. The mold clamping device of the foam molding machine according to claim 3, characterized in that: The lower end of the base forms an insertion rod, and the rotating block fixes one end of the spring to form a clearance hole longitudinally. The aperture of the clearance hole is larger than the diameter of the insertion rod. The spring surrounds the insertion rod, and the insertion rod is inserted into the clearance hole.

5. The mold clamping device of the foam molding machine according to any one of claims 2 to 4, characterized in that: The foam molding machine body includes: a frame, a limit rod and a limit block; one end of the limit rod is fixed to the frame; the other end of the limit rod is fixed to the limit block; the axis of the limit rod is parallel to the axis of the guide column; the frame body forms a limit hole, the diameter of the limit block is larger than the aperture of the limit hole, and the limit hole is slidably matched with the limit rod.

6. The mold clamping device of the foam molding machine according to claim 5, characterized in that: The frame body comprises: ribs and a frame; the ribs are arranged in multiple groups, the multiple groups of ribs intersect each other, and the ends of the ribs are fixed to the inner wall of the frame.

7. The mold clamping device of the foam molding machine according to claim 6, characterized in that: The ribs form lightening holes.

Images