A ejector rod stop structure

Abstract

This utility model provides a stop block structure for an ejector plate, relating to the field of ejector plate technology. It includes a stop block body, the bottom of which is a mounting base. A positioning plate is snapped onto the mounting base, and a stop module is magnetically connected to the top of the positioning plate. This utility model employs a bidirectional wedge-shaped slider fine-tuning mechanism, using an adjusting screw to drive the inclined slider to achieve ±0.02mm precision positioning. This ensures consistent ejector plate retraction position each time, improving the stability of workpiece machining dimensions. A hard alloy wear-resistant sheet directly contacts the ejector plate, reducing frictional wear and maintaining long-term positioning accuracy.

Description

Technical Field

[0001] This utility model relates to the field of ejector plate technology, and in particular to an ejector plate stop block structure. Background Technology

[0002] In industrial applications such as injection molds and die-casting molds, ejector plates (also known as "ejector plates") are used to push ejector pins or ejector rods to eject the molded product from the mold cavity. To ensure stable movement of the ejector plate during mold opening and closing, and to prevent it from retracting excessively or impacting other parts of the mold, stop blocks are usually installed to limit its stroke.

[0003] The existing structure has obvious limitations in practical applications. First, insufficient positioning accuracy is a prominent problem, which means that the positioning of the workpiece cannot meet the expected accuracy requirements, resulting in inconsistent workpiece dimensions and affecting product quality. Second, the adjustment process is cumbersome, requiring operators to spend a lot of time and effort to adjust the positioning accuracy, reducing production efficiency. Finally, the wear compensation defect makes the stop block of the ejector plate prone to wear during use, requiring users to frequently perform wear detection and compensation work, increasing the complexity of equipment maintenance, and also affecting the continuity and stability of production. Therefore, we propose an ejector plate stop block structure. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies. Existing structures have significant limitations in practical applications. First, insufficient positioning accuracy is a prominent issue, meaning the workpiece positioning cannot meet the expected accuracy requirements, resulting in inconsistent workpiece dimensions and affecting product quality. Second, the adjustment process is cumbersome, requiring operators to spend considerable time and effort adjusting positioning accuracy, thus reducing production efficiency. Finally, wear compensation defects make the stop block of the ejector plate prone to wear during use, requiring frequent wear detection and compensation by the user, increasing the complexity of equipment maintenance and affecting the continuity and stability of production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A stop block structure for a pin plate includes a stop block body, the bottom of which is a mounting base, a positioning plate is snapped onto the mounting base, and a stop module is magnetically connected to the top of the positioning plate.

[0007] Furthermore, the main body of the stop block is rectangular, the mounting base has a T-shaped groove, and the bottom surface of the mounting base has a QR code engraving position.

[0008] Furthermore, the positioning plate has several neodymium iron boron magnetic pillars embedded at equal intervals inside, and magnetic detection holes are provided at the four corners of the positioning plate, with magnetic balls placed inside the magnetic detection holes.

[0009] Furthermore, the stop module is inverted convex shape, and a magnetically conductive pure iron layer is embedded at the bottom of the stop module, and the magnetically conductive pure iron layer and the neodymium iron boron magnetic column are magnetically attracted to each other.

[0010] Furthermore, the top of the stop module is provided with a sliding groove, an adjusting screw is installed in the sliding groove, a bidirectional wedge slider is slidably connected to the adjusting screw, and an adjusting button is provided at one end of the top of the stop module, the adjusting button drives the bidirectional wedge slider to slide on the adjusting screw.

[0011] Furthermore, the bottom surface of the upper slider of the bidirectional wedge slider is inclined, and a hard alloy sheet is embedded at the top. The lower slider of the bidirectional wedge slider is inclined on the symmetrical plane with the upper slider, and has a threaded hole inside for connection with the adjusting screw.

[0012] Furthermore, the stop module has an annular hydraulic chamber inside, which is a hollow cylinder. A corrugated spring is installed inside the annular hydraulic chamber, which is filled with silicone oil. An oil inlet is provided on one side of the outer wall of the annular hydraulic chamber.

[0013] Furthermore, observation windows are provided on both sides of the stop module, and transparent polycarbonate covers are installed on the observation windows.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model adopts a bidirectional wedge slider fine adjustment mechanism, which drives the inclined slider by adjusting the screw to achieve ±0.02mm precision positioning, ensuring that the ejector plate retracts to the same position each time, improving the stability of the workpiece machining dimensions. The hard alloy wear-resistant sheet is in direct contact with the ejector plate, reducing friction loss and maintaining positioning accuracy over a long period of time.

[0016] 2. The integrated magnetic quick-change positioning plate utilizes neodymium iron boron magnetic pillars to attract and stop the module, along with conical pin positioning, enabling manual disassembly and assembly. The replacement time is reduced from the traditional 15 minutes to 30 seconds, significantly improving mold change efficiency. The adjustment button drives the wedge slider, allowing for fine-tuning without additional tools, simplifying the operation process.

[0017] 3. The annular hydraulic chamber and corrugated spring structure can dynamically absorb impact energy, and the silicone oil medium provides damping and buffering, reducing mold impact noise and damage, extending equipment life. The hydraulic chamber pressure automatically compensates for wear, avoiding frequent manual adjustments and ensuring long-term zero-gap contact. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the ejector plate stop block provided by this utility model;

[0019] Figure 2 A schematic diagram of the other end of the stop module of the ejector plate stop block structure provided by this utility model;

[0020] Figure 3 A schematic diagram of the annular hydraulic cavity structure of the ejector plate stop block structure provided by this utility model;

[0021] Figure 4 A schematic diagram of a positioning plate structure for a pin plate stop block structure provided by this utility model.

[0022] Legend: 1. Stop block body; 101. Mounting base; 102. Positioning plate; 103. Stop module; 104. T-slot; 105. Neodymium iron boron magnet; 106. Magnetic detection hole; 107. Magnetic ball; 108. Slide groove; 109. Adjusting screw; 110. Bidirectional wedge slider; 111. Adjustment button; 112. Hard alloy sheet; 113. Annular hydraulic chamber; 114. Corrugated spring; 115. Oil inlet; 116. Observation window; 117. Polycarbonate cover plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Example 1

[0028] like Figure 1-4 As shown, this utility model provides a technical solution: a pin plate stop block structure, including a stop block body 1, the bottom of the stop block body 1 is a mounting base 101, a positioning plate 102 is snapped onto the mounting base 101, and a stop module 103 is magnetically connected to the top of the positioning plate 102. The permanent magnet on the positioning plate 102 provides an attraction force of more than 150N to achieve rapid positioning, reducing the replacement time from the traditional 15 minutes to 30 seconds. The bidirectional wedge slider 110 of the stop module 103 enables fine adjustment. After adjustment, the positioning is maintained by the inclined plane self-locking effect, avoiding the return caused by the direct pressing of traditional bolts.

[0029] Example 2

[0030] like Figure 1-4 As shown, the main body 1 of the stop block is rectangular in shape. A T-slot 104 is provided on the mounting base 101. A QR code engraving position is provided on the bottom surface of the mounting base 101. The QR code engraving position supports standardized installation and data traceability, which is convenient for equipment management. Several neodymium iron boron magnetic columns 105 are embedded in the positioning plate 102 at equal intervals. Magnetic detection holes 106 are provided at the four corners of the positioning plate 102. Magnetic balls 107 are provided in the magnetic detection holes 106. The magnetic balls 107 inside the magnetic detection holes 106 can intuitively display the magnetic state and prevent the risk of accidental demagnetization.

[0031] The stop module 103 is convex in shape. A magnetically conductive pure iron layer is embedded at the bottom of the stop module 103, and this layer magnetically attracts the neodymium iron boron magnet 105. A groove 108 is provided at the top of the stop module 103, and an adjusting screw 109 is installed within the groove 108. A bidirectional wedge-shaped slider 110 is slidably connected to the adjusting screw 109. An adjusting button 111 is located at one end of the top of the stop module 103. The adjusting button 111 drives the bidirectional wedge-shaped slider 110 to slide on the adjusting screw 109. Rotating the adjusting button 111 clockwise moves the lower slider to the right, pushing the upper slider upwards. Rotating it counterclockwise lowers the upper slider. The bottom surface of the upper slider of the bidirectional wedge-shaped slider 110 is a slope, and a hard alloy sheet 112 is embedded at the top. The plane of symmetry between the lower and upper sliders of the bidirectional wedge-shaped slider 110 is... The stop module 103 has a sloping surface and a threaded hole inside, which is connected to the adjusting screw 109. The stop module 103 has an annular hydraulic chamber 113 inside. The annular hydraulic chamber 113 is a hollow cylinder. A corrugated spring 114 is installed inside the annular hydraulic chamber 113. The annular hydraulic chamber 113 is filled with silicone oil. An oil inlet 115 is opened on one side of the outer wall of the annular hydraulic chamber 113. The top cover of the annular hydraulic chamber 113 is a detachable flange. An integrated oil passage is set at the bottom. The annular hydraulic chamber 113 only absorbs the impact energy transmitted by the baffle and is physically isolated from the wedge adjustment function. Observation windows 116 are opened on both sides of the stop module 103. A transparent polycarbonate cover plate 117 is installed on the observation window 116. The polycarbonate observation window 116 can monitor the hydraulic oil status in real time, making maintenance more convenient.

[0032] The working process of this utility model is as follows: When using a pin plate stop block structure, the stop block is first fixed on the mold through the T-shaped groove 104 base at the bottom. The magnetic positioning plate 102 quickly adsorbs the stop module 103 through the neodymium iron boron magnetic column 105, and the assembly and disassembly are completed within 30 seconds. The magnetic pure iron layer optimizes the magnetic circuit to ensure a stable connection. At the same time, the magnetic ball 107 in the magnetic detection hole 106 monitors the magnetic state in real time to prevent accidental demagnetization.

[0033] The operator rotates the adjustment button 111 to drive the bidirectional wedge slider 110 to move. When rotated clockwise, the lower slider moves to the right, and the inclined plane pushes the upper slider to rise, achieving a fine adjustment of ±0.02mm. When rotated counterclockwise, it descends. After adjustment, the self-locking effect of the inclined plane prevents backing out, and the hard alloy wear-resistant sheet reduces friction, maintaining positioning accuracy over a long period of time.

[0034] When the ejector plate impacts the stop module 103, the impact force is transmitted to the annular hydraulic chamber 113 through the hard alloy sheet 112. The corrugated spring 114 is compressed, and the silicone oil slowly flows through the bottom oil passage to absorb energy and provide damping buffer. After wear, the hydraulic chamber automatically compensates for the gap. The polycarbonate observation window facilitates monitoring of the oil status and ensures long-term stable operation.

[0035] 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 stop block structure for a pin plate, comprising a stop block body (1), characterized in that: The bottom of the stop block body (1) is a mounting base (101), a positioning plate (102) is snapped onto the mounting base (101), and a stop module (103) is magnetically connected to the top of the positioning plate (102).

2. The ejector plate stop block structure according to claim 1, characterized in that: The main body (1) of the stop block is rectangular in shape. A T-shaped groove (104) is provided on the mounting base (101). A QR code engraving position is provided on the bottom surface of the mounting base (101).

3. The ejector plate stop block structure according to claim 1, characterized in that: The positioning plate (102) has several neodymium iron boron magnets (105) embedded in it at equal intervals. Magnetic detection holes (106) are opened at the four corners of the positioning plate (102), and magnetic balls (107) are placed in the magnetic detection holes (106).

4. The ejector plate stop block structure according to claim 3, characterized in that: The stop module (103) is inverted convex shape. A magnetically conductive pure iron layer is embedded at the bottom of the stop module (103), and the magnetically conductive pure iron layer and the neodymium iron boron magnet (105) are magnetically attracted to each other.

5. The ejector plate stop block structure according to claim 1, characterized in that: The top of the stop module (103) is provided with a slide groove (108), and an adjusting screw (109) is installed in the slide groove (108). A bidirectional wedge slider (110) is slidably connected on the adjusting screw (109). An adjusting button (111) is provided at one end of the top of the stop module (103). The adjusting button (111) drives the bidirectional wedge slider (110) to slide on the adjusting screw (109).

6. The ejector plate stop block structure according to claim 5, characterized in that: The bottom surface of the upper slider of the bidirectional wedge slider (110) is inclined, and a hard alloy sheet (112) is embedded on the top. The lower slider of the bidirectional wedge slider (110) is inclined with the plane of symmetry with the upper slider, and a threaded hole is opened inside, which is connected to the adjusting screw (109).

7. The ejector plate stop block structure according to claim 1, characterized in that: The stop module (103) has an annular hydraulic cavity (113) inside. The annular hydraulic cavity (113) is a hollow cylinder. A corrugated spring (114) is installed inside the annular hydraulic cavity (113). The annular hydraulic cavity (113) is filled with silicone oil. An oil inlet (115) is provided on one side of the outer wall of the annular hydraulic cavity (113).

8. The ejector plate stop block structure according to claim 7, characterized in that: The stop module (103) has observation windows (116) on both sides, and a transparent polycarbonate cover plate (117) is installed on the observation window (116).

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