Electric bicycle rear fender production mold

Abstract

The utility model discloses an electric bicycle rear fender production mold which comprises an injection molding pipeline, a fixed mold is arranged on the injection molding pipeline, and a movable mold is matched with the fixed mold; sealing detection structures are arranged on the fixed mold and the movable mold; the utility model relates to the technical field of molds, when a movable mold and a fixed mold are mutually pressed, a fixed sealing surface and a movable sealing surface are mutually attached, at the moment, the two fixed half sleeves and the two movable half sleeves seal the connecting position of the movable mold and the fixed mold, and when injection molding is carried out, if the sealing between the movable mold and the fixed mold is poor, the movable sealing surface is tightly attached to the movable sealing surface. The air between the movable mold and the fixed mold is discharged to the space between the two fixed half sleeves and the two movable half sleeves, the air pressure sensor can capture and record the pressure change in real time, and a worker can know the sealing performance between the movable mold and the fixed mold according to the numerical value detected by the air pressure sensor and timely stop the subsequent injection molding work.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a production mold for the rear soil removal of electric bicycles. Background Technology

[0002] The rear fender, also known as the rear mudguard, is a component installed behind the wheel of an electric bicycle. Its main purpose is to prevent mud, dust, and other debris from splashing up during riding, keeping the bicycle and rider clean. Electric bicycle rear fenders are typically manufactured using injection molding, a method that offers advantages such as high production efficiency, low cost, and good product consistency, meeting the needs of mass production. However, traditional rear fender injection molds have shortcomings in terms of sealing performance testing. For example, a motorcycle rear mudguard injection mold with publication number CN213564063U, while achieving sealing through the pressing of the moving mold and the fixed mold, lacks real-time sealing performance testing after the pressing. If the sealing performance after pressing the moving mold and the fixed mold does not meet the standard, defects such as flash, shrinkage, and deformation are prone to occur during injection molding. Operators can usually only discover problems after injection molding by inspecting the quality of the molded parts, which not only increases the scrap rate but also reduces production efficiency and is inconvenient to use.

[0003] While existing technologies may already offer solutions to the aforementioned problems, this case aims to provide an alternative or replacement technical solution. Summary of the Invention

[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a production mold for the rear soil removal of an electric bicycle, comprising an injection molding pipe, a fixed mold mounted on the injection molding pipe, and a movable mold matched on the fixed mold; a sealing detection structure is provided on the fixed mold and the movable mold;

[0005] The sealing detection structure includes a fixing component and a standard component;

[0006] The fixing assembly includes two fixing half-sets, which are symmetrically arranged on the fixed mold. Each fixing half-set includes a fixing mounting surface, which is located on the side wall of the fixed mold near the injection pipe. One end of the fixing mounting surface extends to a fixing wrapping surface, and the other end of the fixing wrapping surface expands outward to a fixing sealing surface. An air pressure sensor is installed on the inner wall of one of the two fixing half-sets, and multiple distance measuring instruments are installed on the inner walls of both fixing half-sets.

[0007] The standard component includes two movable half-sets, which are symmetrically arranged on the moving mold. Each movable half-set includes a movable mounting surface, which is mounted on the outer wall of the moving mold. One end of the movable mounting surface extends into a movable wrapping surface, and one end of the movable wrapping surface expands outward into a movable sealing surface. Multiple positioning plates are installed on the inner wall of the two movable half-sets.

[0008] Preferably, the plurality of positioning plates are configured in a one-to-one correspondence with the plurality of ranging instruments.

[0009] Preferably, the two fixed half-sleeves are connected to the fixed mold by a first bolt, and the two movable half-sleeves are connected to the moving mold by a second bolt.

[0010] Preferably, a first sealing gasket is provided on the fixed sealing surface, and a second sealing gasket is provided on the movable sealing surface.

[0011] Preferably, a first sealing strip is provided on both of the fixed half-sleeves, and a second sealing strip is provided on both of the movable half-sleeves.

[0012] Preferably, a third sealing gasket is provided between the fixed mounting surface and the fixed mold, and a fourth sealing gasket is provided between the movable mounting surface and the moving mold. Beneficial effects

[0013] This utility model provides a production mold for the rear dust removal of electric bicycles. Compared with the prior art, it has the following advantages: When the moving mold and the fixed mold are pressed together, the fixed sealing surface and the movable sealing surface are in contact with each other. At this time, the two fixed half-sleeves and the two movable half-sleeves seal the connection between the moving mold and the fixed mold. During injection molding, if the seal between the moving mold and the fixed mold is poor, the air between the moving mold and the fixed mold will be discharged between the two fixed half-sleeves and the two movable half-sleeves. The air pressure sensor can capture and record the pressure change in real time. The operator can understand the sealing performance between the moving mold and the fixed mold by the value detected by the air pressure sensor and stop the injection molding of the rear dust removal in time. At the same time, when the two fixed half-sleeves and the two movable half-sleeves are in contact with each other, multiple distance measuring instruments detect the distance between multiple positioning plates. If the detected distance is greater than the standard value, the sealing detection structure may be malfunctioning. The operator can maintain it in time, which reduces the scrap rate to a certain extent, improves production efficiency, and is convenient to use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the rear soil removal production mold for an electric bicycle, presented in this utility model, from a frontal view perspective.

[0015] Figure 2 This is a three-dimensional structural diagram of the rear view angle of a production mold for the rear soil removal of an electric bicycle according to this utility model.

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of a production mold for removing soil from the rear of an electric bicycle, according to this utility model.

[0017] In the diagram: 1. Injection pipe, 2. Fixed mold, 3. Moving mold, 4. Fixed mounting surface, 5. Fixed wrapping surface, 6. Fixed sealing surface, 7. Air pressure sensor, 8. Distance measuring instrument, 9. Movable mounting surface, 10. Movable wrapping surface, 11. Movable sealing surface, 12. Positioning plate, 13. First bolt, 14. Second bolt, 15. First sealing gasket, 16. Second sealing gasket, 17. First sealing strip, 18. Second sealing strip, 19. Third sealing gasket, 20. Fourth sealing gasket. Detailed Implementation

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example: Those skilled in the art shall connect all electrical components and their compatible power supplies in this case with wires, and select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence shall refer to the working principle described below, in which the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0020] Please see Figure 1-3 In order to solve the problem that traditional post-molding injection molds lack real-time detection function for sealing after the moving mold 3 and the fixed mold 2 are pressed together, operators can usually only find problems by checking the quality of the injection molded parts after the injection is completed. This not only increases the scrap rate, but also reduces production efficiency and is inconvenient to use. This technical solution is designed and the detailed technical solution is as follows.

[0021] An electric bicycle rear dust removal production mold includes an injection pipe 1, a fixed mold 2 disposed on the injection pipe 1, and a movable mold 3 matched on the fixed mold 2; a sealing detection structure is disposed on the fixed mold 2 and the movable mold 3; the sealing detection structure includes a fixed component and a standard component;

[0022] It should be noted that the injection pipe 1 is used to transport the injection molding material. During injection, the moving mold 3 moves toward the fixed mold 2 and presses together. At this time, the fixed component and the standard component cooperate with each other to form a sealed structure.

[0023] Specifically, the fixing component includes two fixing half-sets, which are symmetrically arranged on the fixed mold 2. Each fixing half-set includes a fixing mounting surface 4, which is located on the side wall of the fixed mold 2 near the injection pipe 1. One end of the fixing mounting surface 4 extends to a fixing wrapping surface 5, and the other end of the fixing wrapping surface 5 expands outward to a fixing sealing surface 6. An air pressure sensor 7 is installed on the inner wall of one of the two fixing half-sets, and multiple distance measuring instruments 8 are installed on the inner walls of the two fixing half-sets.

[0024] Specifically, the standard component includes two movable half-sets, which are symmetrically arranged on the moving mold 3. Each movable half-set includes a movable mounting surface 9, which is mounted on the outer wall of the moving mold 3. One end of the movable mounting surface 9 extends to a movable wrapping surface 10, and the other end of the movable wrapping surface 10 expands outward to a movable sealing surface 11. Multiple positioning plates 12 are installed on the inner wall of the two movable half-sets.

[0025] It should be noted that when the moving mold 3 and the fixed mold 2 are pressed together, the fixed sealing surface 6 and the movable sealing surface 11 are in contact with each other. At this time, the two fixed half-sleeves and the two movable half-sleeves seal the connection between the moving mold 3 and the fixed mold 2. During injection molding, the injection material will displace the original air inside the mold. If the seal between the moving mold 3 and the fixed mold 2 is good, the air pressure inside the cavity will gradually increase as the injection material is filled. If the seal between the moving mold 3 and the fixed mold 2 is poor, the air between the moving mold 3 and the fixed mold 2 will be discharged between the two fixed half-sleeves and the two movable half-sleeves. The air pressure sensor 7 can capture and record pressure changes in real time. By using the values ​​detected by the air pressure sensor 7, the staff can understand the sealing performance between the moving mold 3 and the fixed mold 2 and stop the injection molding work of the soil removal in time. At the same time, when the two fixed half-sleeves and the two moving half-sleeves are in contact with each other, multiple distance measuring instruments 8 detect the distance between multiple positioning plates 12. If the detected distance is greater than the standard value, the sealing detection structure may be malfunctioning. The staff can then perform maintenance in time, which reduces the scrap rate to a certain extent, improves production efficiency, and is easy to use.

[0026] Among them, the air pressure sensor 7 and the distance measuring instrument 8 are connected to the control system of the injection molding production line via signal lines or wireless means. Since this is existing technology, it will not be described in detail here. The cooling water pipes set on the moving mold 3 and the fixed mold 2 can pass through the fixed wrapping surface 5 and the moving wrapping surface 10 in a sealed manner. The specific setting position can be determined according to the actual use of the cooling water pipes, which will not be described in detail here.

[0027] As a preferred and further option, multiple positioning plates 12 are set up one-to-one with multiple ranging instruments 8;

[0028] Preferably, and further, the two fixed half-sleeves are connected to the fixed mold 2 by a first bolt 13 for connecting and fixing the two fixed half-sleeves to the fixed mold 2, and the two movable half-sleeves are connected to the movable mold 3 by a second bolt 14 for connecting and fixing the two movable half-sleeves to the movable mold 3.

[0029] As a preferred and further option, a first sealing gasket 15 is provided on the fixed sealing surface 6, and a second sealing gasket 16 is provided on the movable sealing surface 11, so that the first sealing gasket 15 and the second sealing gasket 16 can increase the sealing performance when the fixed sealing surface 6 and the movable sealing surface 11 are in contact with each other.

[0030] As a preferred and further option, a first sealing strip 17 is provided on each of the two fixed half-sleeves, and a second sealing strip 18 is provided on each of the two movable half-sleeves. The first sealing strip 17 and the second sealing strip 18 are used to increase the sealing performance when the two fixed half-sleeves and the two movable half-sleeves are spliced ​​together.

[0031] As a preferred and further option, a third sealing gasket 19 is provided between the fixed mounting surface 4 and the fixed mold 2 to increase the sealing between the fixed mounting surface 4 and the fixed mold 2, and a fourth sealing gasket 20 is provided between the movable mounting surface 9 and the moving mold 3 to increase the sealing between the movable mounting surface 9 and the moving mold 3.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A production mold for a rear dust removal system for electric bicycles, comprising an injection-molded pipe (1), characterized in that, A fixed mold (2) is provided on the injection pipe (1), and a moving mold (3) is matched on the fixed mold (2); a sealing detection structure is provided on the fixed mold (2) and the moving mold (3); The sealing detection structure includes a fixing component and a standard component; The fixing assembly includes two fixing half-sets, which are symmetrically arranged on the fixed mold (2). Each fixing half-set includes a fixing mounting surface (4), which is located on the side wall of the fixed mold (2) near the injection pipe (1). One end of the fixing mounting surface (4) extends to a fixing wrapping surface (5), and the other end of the fixing wrapping surface (5) expands outward to a fixing sealing surface (6). An air pressure sensor (7) is installed on the inner wall of one of the two fixing half-sets, and multiple distance measuring instruments (8) are installed on the inner wall of the two fixing half-sets. The standard component includes two movable half-sets, which are symmetrically arranged on the moving mold (3). Each movable half-set includes a movable mounting surface (9), which is mounted on the outer wall of the moving mold (3). One end of the movable mounting surface (9) extends into a movable wrapping surface (10), and one end of the movable wrapping surface (10) expands outward into a movable sealing surface (11). Multiple positioning plates (12) are installed on the inner wall of the two movable half-sets.

2. The production mold for the rear soil removal of an electric bicycle according to claim 1, characterized in that, The multiple positioning plates (12) are set one-to-one with the multiple ranging instruments (8).

3. The production mold for the rear soil removal of an electric bicycle according to claim 1, characterized in that, The two fixed half-sleeves are connected to the fixed mold (2) by a first bolt (13), and the two movable half-sleeves are connected to the moving mold (3) by a second bolt (14).

4. The production mold for the rear soil removal of an electric bicycle according to claim 1, characterized in that, A first sealing gasket (15) is provided on the fixed sealing surface (6), and a second sealing gasket (16) is provided on the movable sealing surface (11).

5. The production mold for the rear soil removal of an electric bicycle according to claim 1, characterized in that, Both of the fixed half-sleeves are provided with a first sealing strip (17), and both of the movable half-sleeves are provided with a second sealing strip (18).

6. The production mold for the rear soil removal of an electric bicycle according to claim 1, characterized in that, A third sealing gasket (19) is provided between the fixed mounting surface (4) and the fixed mold (2), and a fourth sealing gasket (20) is provided between the movable mounting surface (9) and the moving mold (3).

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