Positioning clamp for batch clamping of ejector rods

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a positioning fixture for batch clamping of ejector rods, which comprises a bottom plate, two vertical fixing plates, a positioning component and a plurality of ejector rods, the two fixing plates are respectively arranged at two ends of the bottom plate, the two fixing plates are oppositely arranged, and the fixing plates are perpendicular to the bottom plate; the positioning assembly comprises a first positioning plate and a second positioning plate, first sliding blocks are arranged at the two ends of the first positioning plate, and second sliding blocks are arranged at the two ends of the second positioning plate. A first sliding groove is formed in the top end of the fixing plate, and the first sliding block slides in the first sliding groove. A second sliding groove is formed in the bottom end of the fixing plate, and the second sliding block slides in the second sliding groove. A plurality of through holes are formed in the first positioning plate and the second positioning plate, the through holes are arranged at equal intervals, the ejector rods are inserted into the through holes respectively, and the ejector rods sequentially penetrate through the first positioning plate and the second positioning plate; and by arranging the first positioning plate and the second positioning plate, the clamp can clamp the ejector rods in batches, and then the machining precision of the ejector rods is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to a positioning fixture for batch clamping of ejector rods. Background Art

[0002] The ejector pin plays a vital role in the manufacture of injection molds. The ejector pin pushes the ejector plate to move the ejector sleeve fixed on the ejector plate, thereby ejecting the injection molded part from the mold cavity or core to achieve the purpose of demolding. Injection molded parts may have defects such as whitening, tiger stripes, and strain during the ejection molding process. In addition, to prevent material leakage, the hole fitting clearance between the ejector pin and the mold core in the injection mold needs to be very small, and the end face roughness of the ejector pin needs to be consistent with the surface roughness of the molded product. Therefore, the design and manufacturing quality of the ejector pin directly affects the quality of the plastic molded product and the smooth progress of the molding process.

[0003] The existing processing and clamping method is: placing the ejector pin horizontally on the workbench and fixing it with glue or placing the ejector pin horizontally on a flat-nose pliers and clamping it with a flat-nose pliers before processing. In the existing technology, each ejector pin is processed separately, and the skill differences of different personnel affect the overall accuracy consistency and repeatability, and it is impossible to ensure that the ejector pin processing quality meets the use requirements. Moreover, when there are several to dozens of ejector pins on the injection mold, the processing and clamping operation accuracy and efficiency of the existing technology are relatively low. Utility Model Content

[0004] The utility model aims to provide a positioning fixture for clamping ejector pins in batches, so as to solve the technical problems of low processing precision and efficiency of ejector pins, and achieve the purpose of clamping ejector pins in batches to improve precision and efficiency.

[0005] In order to solve the above technical problems, the utility model provides a positioning fixture for batch clamping of ejector rods, comprising: a bottom plate, two vertical fixed plates, a positioning assembly and a plurality of ejector rods, wherein the bottom plate is detachably arranged from the fixed plate, and the bottom plate is arranged at the bottom end of the fixed plate; the fixed plate is detachably arranged from the positioning assembly, and the positioning assembly is arranged inside the fixed plate;

[0006] The two fixing plates are respectively arranged at both ends of the bottom plate, the two fixing plates are arranged opposite to each other, and the fixing plates are arranged perpendicular to the bottom plate;

[0007] The positioning assembly includes a first positioning plate and a second positioning plate, wherein both ends of the first positioning plate are provided with first sliders, and both ends of the second positioning plate are provided with second sliders;

[0008] A first sliding groove is formed at the top of the fixing plate, and the first sliding block slides in the first sliding groove;

[0009] A second sliding groove is formed at the bottom end of the fixed plate, and the second sliding block slides in the second sliding groove;

[0010] The first positioning plate and the second positioning plate are provided with a plurality of through holes, the plurality of through holes are arranged at equal intervals, the plurality of push rods are respectively inserted into the plurality of through holes, and the push rods sequentially pass through the first positioning plate and the second positioning plate.

[0011] Furthermore, a through slot is provided in the middle of the bottom plate, and a plurality of first positioning pins and a plurality of first screws are provided at both ends of the through slot.

[0012] Furthermore, a plurality of first threaded holes and a plurality of first positioning holes are formed at the bottom end of the fixing plate, the plurality of first threaded holes match the plurality of first positioning pins, and the plurality of first positioning holes match the plurality of first screws;

[0013] The first positioning pins are respectively threadedly connected to the first threaded holes, and the first screws pass through the first positioning pins respectively.

[0014] Furthermore, a plurality of second positioning holes are provided at the top and bottom ends of the fixing plate;

[0015] A plurality of third positioning holes are respectively formed in the middle of the first sliding block and the second sliding block, and the plurality of second positioning holes are matched with the plurality of third positioning holes.

[0016] Furthermore, the fixing plate is connected to the first positioning plate and the second positioning plate through a plurality of second positioning pins, and the second positioning pins pass through the second positioning hole and the third positioning hole in sequence.

[0017] Furthermore, the through slot is detachably provided with a cover plate, the cover plate matches the through slot, and the cover plate is provided with a plurality of second threaded holes.

[0018] Furthermore, a plurality of third threaded holes are formed at the bottom end of the fixing plate, and the plurality of third threaded holes are coaxially arranged with the plurality of second threaded holes respectively.

[0019] Furthermore, the second threaded hole is threadedly connected with a second screw, and the second screw passes through the second thread and the third thread in sequence.

[0020] The beneficial effects of the utility model are:

[0021] 1. By setting the first positioning plate and the second positioning plate to clamp the ejector, the ejector can be prevented from being unstable and the risk of the ejector moving or falling during processing can be avoided. There is no need to use glue to fix it, and there is no need to clean the glue after use, which saves time and effort.

[0022] 2. The first positioning plate and the second positioning plate with through holes of different diameters can be selected according to the size of the ejector rod, so that the clamp can be adapted to a variety of ejector rods, and the operation is convenient and efficient, thereby improving the efficiency of clamping.

[0023] 3. By setting more through holes, the fixture can clamp multiple ejector pins at a time, batch clamping, and one-time calibration, eliminating the accuracy differences caused by multiple machine operations, different personnel, etc., and improving the consistency of the accuracy of multiple ejector pins.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a structural diagram of a positioning fixture for batch clamping of ejector pins according to the utility model;

[0027] Figure 2 This is a diagram of the installation structure of the base plate and the fixing plate of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the first positioning plate of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the second positioning plate of the utility model;

[0030] Figure 5 This is a structural cross-sectional view of the fixing plate and the positioning assembly of the utility model installed through the second positioning pin;

[0031] Figure 6 This is a structural cross-sectional view of the bottom plate and the cover plate of the utility model being installed by the second screw.

[0032] In the picture:

[0033] 1. Bottom plate; 11. Through slot; 12. First positioning pin; 13. First screw;

[0034] 2. Fixed plate; 21. First slide groove; 22. Second slide groove; 23. Second positioning hole; 24. Second positioning pin;

[0035] 3. Positioning assembly; 31. First positioning plate; 311. First slider; 32. Second positioning plate; 321. Second slider; 33. Through hole; 34. Third positioning hole;

[0036] 4. Cover plate; 41. Second screw; 5. Push rod. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] Example:

[0039] like Figures 1 to 6 As shown, a positioning fixture for batch clamping of ejector rods comprises: a base plate 1, two vertical fixed plates 2, a positioning assembly 3 and a number of ejector rods 5, the base plate 1 and the fixed plate 2 are detachably arranged, and the base plate 1 is arranged at the bottom end of the fixed plate 2; the fixed plate 2 and the positioning assembly 3 are detachably arranged, and the positioning assembly 3 is arranged inside the fixed plate 2; the two fixed plates 2 are respectively arranged at both ends of the base plate 1, the two fixed plates 2 are arranged opposite to each other, the fixed plates 2 are arranged perpendicular to the base plate 1, and the two fixed plates 2 are symmetrical about the center line of the base plate 1.

[0040] like Figure 3-4 As shown, the positioning assembly 3 includes a first positioning plate 31 and a second positioning plate 32. First sliders 311 are provided at both ends of the first positioning plate 31, and second sliders 321 are provided at both ends of the second positioning plate 32. A first sliding groove 21 is provided at the top of the fixed plate 2, and the first slider 311 slides in the first sliding groove 21. By placing the first slider 311 in the first sliding groove 21, the two ends of the first positioning plate 31 are clamped between the fixed plate 2, and the first positioning plate 31 is positioned in the lateral direction. The first positioning plate 31 and the base plate 1 are arranged parallel.

[0041] A second sliding groove 22 is opened at the bottom end of the fixed plate 2, and the second slider 321 slides in the second sliding groove 22; by placing the second slider 321 in the second sliding groove 321, the two ends of the second positioning plate 32 are clamped between the fixed plate 2, and the second positioning plate 32 is positioned in the lateral direction, and the second positioning plate 32 and the base plate 1 are arranged parallel.

[0042] The first positioning plate 31 and the second positioning plate 32 are provided with a plurality of through holes 33, and the plurality of through holes 33 are arranged at equal intervals. The plurality of push rods 5 are respectively inserted into the plurality of through holes 33, and the push rods 5 pass through the first positioning plate 31 and the second positioning plate 32 in sequence. The push rods 5 are inserted from the through holes 33 of the first positioning plate 31 into the through holes 33 of the second positioning plate 32, thereby fixing the push rods 5 and preventing the push rods 5 from shaking during subsequent processing due to instability and affecting the accuracy.

[0043] like Figure 2 As shown, a through slot 11 is provided in the middle of the base plate 1, and a plurality of first positioning pins 12 and a plurality of first screws 13 are provided at both ends of the through slot 11; a plurality of first threaded holes and a plurality of first positioning holes are provided at the bottom end of the fixing plate 2, and the plurality of first threaded holes match the plurality of first positioning pins 12, and the plurality of first positioning holes match the plurality of first screws 13; the plurality of first positioning pins 12 are respectively threadedly connected with the plurality of first threaded holes, and the plurality of first screws 13 respectively pass through the plurality of first positioning pins 12, align the first threaded holes with the first screws 13, align the first positioning holes with the first positioning pins 12, and then insert the fixing plate 2 on the base plate 1 and fix it, and the first slide groove 21 and the second slide groove 22 of the fixing plate 2 are placed along the center close to the base plate 1.

[0044] like Figure 5 As shown, the top and bottom ends of the fixed plate 2 are each provided with a plurality of second positioning holes 23; the middle portions of the first slider 311 and the second slider 321 are each provided with a plurality of third positioning holes 34, and the plurality of second positioning holes 23 are matched with the plurality of third positioning holes 34 respectively; the fixed plate 2 is connected to the first positioning plate 31 and the second positioning plate 32 via a plurality of second positioning pins 24, which pass through the second positioning holes 23 and the third positioning holes 34 in sequence. The first positioning plate 31 and the second positioning plate 32 are respectively placed into the first chute 21 and the second chute 22, and then the second positioning holes 23 and the third positioning holes 34 are aligned one by one. The second positioning pins 24 are inserted to fix the first positioning plate 31 and the second positioning plate 32, and the first positioning plate 31 and the second positioning plate 32 are positioned in the longitudinal direction, thereby completely fixing the first positioning plate 31 and the second positioning plate 32.

[0045] like Figure 6 As shown, the through slot 11 is detachably provided with a cover plate 4, which mates with the through slot 11 and is provided with a plurality of second threaded holes. The bottom end of the fixing plate 2 is provided with a plurality of third threaded holes, which are coaxially arranged with the plurality of second threaded holes. The second threaded holes are threadedly connected to second screws 41, which sequentially penetrate the second and third threads. The cover plate 4 is placed into the through slot 11, the third and second threaded holes are aligned, and the second screws 41 are then screwed into the third and second threaded holes to connect the cover plate 4 to the fixing plate 2, further securing the fixing plate 2 and preventing it from shaking and affecting accuracy.

[0046] To sum up, select the first positioning plate 31 and the second positioning plate 32 that match the push rod 5, the diameter of the through hole 33 is equal to the diameter of the push rod 5, and then install the fixed plate 2 on the base plate 1 through the first screw 13 and the first positioning pin 12, and install the cover plate 4 in the through groove 11 through the second screw 41, and the fixed plate 2 is fixed on the base plate 1; insert the first positioning plate 31 and the second positioning plate 32 into the fixed plate 2 from the first slide groove 21 and the second slide groove 22 respectively, align the second positioning hole 23 and the third positioning hole 34, insert the second positioning pin 24 to fix the first positioning plate 31 and the second positioning plate 32, and finally insert the push rod 5 into the through hole 33 to complete the clamping of the push rod 5, place the device on the processing equipment machine, and perform processing calibration and milling operations, thereby improving processing accuracy and efficiency.

[0047] The various devices selected in this application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0048] In the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A positioning fixture for batch clamping of ejector pins, characterized in that: include: A bottom plate (1), two vertical fixed plates (2), a positioning assembly (3) and a plurality of top rods (5), wherein the bottom plate (1) and the fixed plate (2) are detachably arranged, and the bottom plate (1) is arranged at the bottom end of the fixed plate (2); the fixed plate (2) and the positioning assembly (3) are detachably arranged, and the positioning assembly (3) is arranged inside the fixed plate (2); The two fixing plates (2) are respectively arranged at the two ends of the bottom plate (1), the two fixing plates (2) are arranged opposite to each other, and the fixing plates (2) and the bottom plate (1) are arranged perpendicularly; The positioning assembly (3) comprises a first positioning plate (31) and a second positioning plate (32); first sliders (311) are provided at both ends of the first positioning plate (31); and second sliders (321) are provided at both ends of the second positioning plate (32); A first sliding groove (21) is provided at the top end of the fixing plate (2), and the first sliding block (311) slides in the first sliding groove (21); A second sliding groove (22) is provided at the bottom end of the fixed plate (2), and the second sliding block (321) slides in the second sliding groove (22); The first positioning plate (31) and the second positioning plate (32) are provided with a plurality of through holes (33), the plurality of through holes (33) are arranged at equal intervals, the plurality of push rods (5) are respectively inserted into the plurality of through holes (33), and the push rods (5) pass through the first positioning plate (31) and the second positioning plate (32) in sequence.

2. A positioning fixture for batch clamping of ejector pins as claimed in claim 1, characterized in that: A through slot (11) is provided in the middle of the bottom plate (1), and a plurality of first positioning pins (12) and a plurality of first screws (13) are provided at both ends of the through slot (11).

3. A positioning fixture for batch clamping of ejector pins as claimed in claim 2, characterized in that: The bottom end of the fixing plate (2) is provided with a plurality of first threaded holes and a plurality of first positioning holes, the plurality of first threaded holes match the plurality of first positioning pins (12), and the plurality of first positioning holes match the plurality of first screws (13); A plurality of the first positioning pins (12) are respectively threadedly connected to a plurality of the first threaded holes, and a plurality of the first screws (13) respectively pass through a plurality of the first positioning pins (12).

4. A positioning fixture for batch clamping of ejector pins as claimed in claim 1, characterized in that: A plurality of second positioning holes (23) are provided at the top and bottom ends of the fixing plate (2); A plurality of third positioning holes (34) are provided in the middle of each of the first sliding block (311) and the second sliding block (321), and a plurality of the second positioning holes (23) are matched with a plurality of the third positioning holes (34) respectively.

5. A positioning fixture for batch clamping of ejector pins as claimed in claim 4, characterized in that: The fixing plate (2) is connected to the first positioning plate (31) and the second positioning plate (32) via a plurality of second positioning pins (24), and the second positioning pins (24) sequentially pass through the second positioning hole (23) and the third positioning hole (34).

6. A positioning fixture for batch clamping of ejector pins as claimed in claim 2, characterized in that: The through slot (11) is detachably provided with a cover plate (4), the cover plate (4) matches the through slot (11), and the cover plate (4) is provided with a plurality of second threaded holes.

7. A positioning fixture for batch clamping of ejector pins as claimed in claim 6, characterized in that: A plurality of third threaded holes are provided at the bottom end of the fixing plate (2), and the plurality of third threaded holes are respectively coaxially arranged with the plurality of second threaded holes.

8. A positioning fixture for batch clamping of ejector pins as claimed in claim 7, characterized in that: The second threaded hole is threadedly connected with a second screw (41), and the second screw (41) passes through the second thread and the third thread in sequence.

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