Pin insert mounting jig

Abstract

The utility model relates to the technical field of injection molding workpieces, in particular to a pin insert mounting jig. Comprising a first frame body, a second frame body and a group of mounting seats, the second frame body is slidably mounted at the rear end of the first frame body, a pin insert is provided with a bottom plate and a vertical plate, the bottom plate is provided with a notch, the front end of the first frame body is provided with a group of positioning columns and the mounting seats, and the mounting seats are provided with penetrating grooves which extend front and back and are provided with notches. One end of the bottom plate extends out of the notch, the inner wall of the penetrating groove protrudes to form a protruding part matched with the notch, the protruding part can limit the pin insert in the extending direction of the notch, and a set of ejecting pieces right facing the penetrating groove are arranged on the second frame body and used for pushing out the pin insert arranged in the penetrating groove. The pin insert is placed in the mounting jig in advance and then is completely mounted in the injection mold at a time, and the injection molding process can be started by pulling out the mounting jig, so that the mounting speed of the pin insert is increased, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection-molded workpieces, in particular to a pin insert installation jig. Background Art

[0002] Injection molding, also known as injection mold molding, is a processing technology with high production speed, high efficiency and a variety of patterns and colors. At a certain temperature, the fully molten material is injected into the mold cavity of the mold through a screw agitation. After cooling and solidification, the corresponding molded product is obtained. The implant injection technology is to pre-install parts (generally metal components) in the injection mold. During injection molding, the parts are directly fixed in the colloid. This technology has the characteristics of high connection strength and high production efficiency.

[0003] Currently, in the actual production process, the corresponding pin insert 1 of the present application is as Figure 1 shown. The pin insert 1 includes a bottom plate 11 and a vertical plate 12. The vertical plate 12 is arranged on the bottom plate 11, and a notch 111 is provided on the bottom plate 11. The external dimensions of the above-mentioned pin insert 1 are small. The traditional method is that before injection molding, the operator installs the pin insert 1 into the injection mold in sequence. After all the pin inserts 1 are installed, the injection molding process is carried out. Due to the small size of the pin insert 1 and the limited operating space for the operator to install the pin insert 1, the installation speed of the pin insert 1 is slow, resulting in difficulties in quickly implementing the subsequent injection molding process and low work efficiency. Summary of the Utility Model

[0004] To overcome the deficiencies of the above-mentioned prior art, the utility model provides a pin insert installation jig, which solves the technical problems of slow installation speed of the pin insert, difficulties in quickly implementing the subsequent injection molding process and low work efficiency.

[0005] To achieve the above purpose, the utility model is realized by the following technical solutions:

[0006] The cam is configured to move the second end of the second cam into engagement with the first end of the second cam, the second end of the second cam being configured to move the second end of the second cam relative to the first end of the second cam.

[0007] Based on the above structure, the principle of the pin insert installation jig is as follows: when the pin insert needs to be installed into the injection mold, the installation jig is in a reset state, a preset distance is maintained between the first frame and the second frame, a group of top pieces are opposite to the through slot, and the end of the top piece does not enter the through slot. First, the pin insert is placed into the through slot with the bottom plate translated toward the front end opening of the through slot, the bottom surface of the bottom plate is fitted with the front end surface of the first frame, and the convex part corresponds to the notch. Then, a group of positioning posts at the front end of the first frame are inserted into the injection mold to limit the relative position between the first frame and the injection mold. The injection mold is provided with positioning holes corresponding to the positioning posts. At this time, the front end opening of the through slot is opposite to the position of the pin insert on the mold. Since the convex part is aligned with the pin insert in the notch The pin insert is limited in the extension direction so that the pin insert cannot fall out of the groove from the notch. Then, the second frame is driven to drive a group of top pieces to move along the extension direction of the groove toward the first frame. The second frame is continued to be driven, and the ends of a group of top pieces support the bottom plate to push the pin insert out of the groove. When the second frame reaches the preset stroke, a group of top pieces completely push the pin insert out of the groove. At this time, the pin insert is installed in the injection mold, and the installation fixture is pulled out to complete the installation of the pin insert. Since one end of the bottom plate extends out of the outer end of the mounting seat from the notch, in the event of an erroneous operation such as reverse installation, the end of the pin insert extending from the notch can be pinched to take out one pin insert separately without having to eject all the pin inserts at once through the second frame.

[0008] Further, in a pin insert installation jig in the present application, a reset assembly is provided between the first frame and the second frame. The reset assembly includes: a set of elastic members and a set of guide rods. The set of elastic members and guide rods are respectively arranged at the rear end of the first frame. One end of the set of elastic members away from the first frame abuts against the front end of the second frame. The second frame is sleeved on the set of guide rods, and the second frame can move axially along the guide rods. As a preferred solution of the present application, the reset assembly in a pin insert installation jig of the present application is used for resetting the second frame. When the installation jig pushes the pin insert into the injection mold, the second frame moves axially along the guide rods in a direction close to the first frame, and the set of elastic members are compressed under the action of the second frame. After the installation jig pushes the pin insert into the injection mold, under the action of the set of elastic members, the set of elastic members push the second frame to move axially along the set of guide rods in a direction away from the first frame, and a set of ejectors retract to a preset position along the extending direction of the through slots.

[0009] Further, in a pin insert installation jig in the present application, a set of first recesses are provided at the rear end of the first frame, and a set of second recesses corresponding to the set of first recesses one by one are provided at the front end of the second frame. The numbers of the first recesses and the second recesses respectively correspond to the elastic members, and the second recesses and the first recesses respectively accommodate the front and rear ends of the elastic members. As a preferred solution of the present application, the first recesses and the second recesses in a pin insert installation jig of the present application are respectively used for accommodating the front and rear ends of the elastic members and performing axial and radial limiting on the elastic members to prevent the elastic members from shifting during the movement of the second frame away from or close to the first frame.

[0010] Further, a pin insert installation jig in the present application further includes: a limiting assembly. The limiting assembly is arranged at the rear end of the first frame. The limiting assembly includes a set of limiting protrusions, and the set of limiting protrusions are used for limiting the forward movement stroke of the second frame. As a preferred solution of the present application, the limiting protrusions in a pin insert installation jig of the present application are used for limiting the second frame. When the installation jig pushes the pin insert into the injection mold and the front end of the second frame abuts against the set of limiting protrusions, the second frame cannot continue to move in a direction close to the first frame. Since a set of ejectors are arranged on the second frame, the limiting protrusions also limit the set of ejectors at the same time to prevent the set of ejectors from damaging the inside of the injection mold.

[0011] Furthermore, in a pin insert installation jig in the present application, the limiting assembly further includes: a limiting column, the limiting column can be axially adjusted and installed at the rear end of the first frame, the limiting column has a limiting convex radially protruding at one end away from the first frame, the second frame is sleeved on the limiting column, the second frame is located between the limiting convex and the first frame, and the limiting convex is used to limit the travel of the second frame to move backward. As a preferred solution of the present application, the limiting convex in a pin insert installation jig in the present application is used to axially connect the second frame with the first frame and axially limit the second frame, the second frame moves axially away from the first frame along the limiting column under the action of a group of elastic members, when the rear end of the second frame contacts the front end of the limiting convex, the second frame cannot continue to move in the direction away from the first frame, and the limiting of the second frame is completed; at the same time, by adjusting the distance between the front end of the limiting convex and the rear end of the first frame, the preset distance between the first frame and the second frame is adjusted, thereby adjusting the preset position of the top member.

[0012] Furthermore, in a pin insert installation jig in the present application, the mounting seat is detachably mounted on the first frame, a locking protrusion is extended from the mounting seat near the second frame, a notch adapted to the locking protrusion is provided on the first frame, a mounting seat pressure plate is provided at the rear end of the first frame, the mounting seat pressure plate is arranged at the rear end of the mounting seat, and the mounting seat pressure plate is detachably connected to the first frame. As a preferred embodiment of the present application, the notch in a pin insert installation jig in the present application is used for limiting and positioning when installing the mounting seat, the mounting seat is installed on the first frame, and when the front end of the locking protrusion fits with the bottom of the notch, the limiting of the mounting seat is completed; the mounting seat is detachably mounted on the first frame, and when the mounting seat is worn or damaged, it is convenient for timely repair and replacement without replacing the first frame, thereby improving the economy of the installation jig.

[0013] Furthermore, in a pin insert installation jig in the present application, the top piece is detachably installed on the second frame, a top piece limiting protrusion is provided on one end of the top piece away from the first frame, a top piece installation countersunk hole adapted to the top piece is provided on the rear end of the second frame, the top piece is installed in the top piece installation countersunk hole, a top piece pressure plate is provided on the rear end of the second frame, the top piece pressure plate is arranged at the rear end of the top piece limiting protrusion, and the top piece pressure plate is detachably connected to the second frame. As a preferred solution of the present application, the top piece installation countersunk hole in a pin insert installation jig in the present application is used to install the top piece; the top piece limiting protrusion is used to axially limit the top piece, and when the front end of the top piece limiting protrusion is in contact with the bottom surface of the top piece installation countersunk hole, the top piece cannot move in the direction close to the first frame; the top piece pressure plate is used to resist the top piece limiting protrusion to prevent the top piece from shifting during the process of the top piece ejecting the pin insert; when the top piece is worn and damaged, it is convenient to repair and replace it in time without replacing the second frame, thereby improving the economy of the installation jig.

[0014] Furthermore, a pin insert installation jig in the present application further includes: a holding assembly, which is installed at the rear end of the second frame. The holding assembly includes: a set of mounting rods and a handle. A set of the mounting rods are disposed between the second frame and the handle, and both ends of a set of the mounting rods are respectively connected to the rear end of the second frame and the front end of the handle. As a preferred solution of the present application, for the holding assembly in a pin insert installation jig of the present application, an operator can hold the handle, making it more convenient to operate the installation jig.

[0015] It can be seen from the above technical solutions that the present utility model has the following beneficial effects:

[0016] The present utility model provides a pin insert installation jig. By pre-placing the pin insert on the installation jig and then using the installation jig to install all the pin inserts into the injection mold at one time, and pulling out the installation jig, the injection process can be started, thereby improving the installation speed of the pin insert and enhancing the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structure diagram of a pin insert corresponding to a pin insert installation jig in an embodiment of the present application;

[0018] Figure 2 It is a plan view of a pin insert installation jig in an embodiment of the present application;

[0019] Figure 3 is Figure 2 a three-dimensional cross-sectional view of section A-A in

[0020] Figure 4 is Figure 2 a three-dimensional cross-sectional view of section B-B in

[0021] Figure 5 is Figure 2 a three-dimensional cross-sectional view of section C-C in

[0022] Figure 6 It is a three-dimensional structure diagram of a mounting seat in a pin insert installation jig in an embodiment of the present application.

[0023] In the figure: 1 - pin insert; 10 - holding assembly; 101 - mounting rod; 102 - handle; 11 - bottom plate; 111 - notch; 12 - vertical plate; 2 - first frame; 20 - first recess; 21 - notch; 22 - mounting seat pressing plate; 3 - second frame; 30 - second recess; 31 - top piece mounting counterbore; 32 - top piece pressing plate; 4 - mounting seat; 40 - through slot; 401 - notch; 41 - convex part; 42 - clamping convex; 5 - positioning post; 6 - top piece; 61 - top piece limit convex; 7 - reset assembly; 71 - elastic part; 72 - guide rod; 8 - limit assembly; 81 - limit convex part; 82 - limit post; 821 - limit convex; 9 - linear bearing. Detailed implementation mode

[0024] As Figure 2 , 3 , 4, 5, 6 show, a pin insert installation jig for installing the pin insert 1 into an injection mold before injection molding, including: a first frame 2, a second frame 3, and a group of mounting seats 4. The second frame 3 is slidably installed at the rear end of the first frame 2. The pin insert 1 includes: a bottom plate 11 and a vertical plate 12. The vertical plate 12 is arranged on the bottom plate 11. A notch 111 is provided on the bottom plate 11. A group of positioning posts 5 are provided at the front end of the first frame 2. A group of the mounting seats 4 are installed at the front end of the first frame 2. A through slot 40 extending forward and backward is provided on the mounting seat 4. The through slot 40 includes a notch 401 extending laterally out of the mounting seat 4. The pin insert 1 is horizontally placed into the through slot 40 with the bottom plate 11 facing the front opening of the through slot 40. During this process, one end of the bottom plate 11 extends out of the outer end of the mounting seat 4 from the notch 401. A convex part 41 adapted to the notch 111 is protruded on the inner wall of the through slot 40. The convex part 41 is used to limit the pin insert 1 in the extending direction of the notch 401. A group of top pieces 6 are provided on the second frame 3. The group of top pieces 6 face the through slot 40. The second frame 3 is used to drive the top pieces 6 to move forward to push out the pin insert 1 placed in the through slot 40.

[0025] Based on the above structure, the principle of the pin insert installation jig is as follows: when the pin insert 1 needs to be installed into the injection mold, the installation jig is in a reset state, a preset distance is maintained between the first frame 2 and the second frame 3, a group of top pieces 6 are opposite to the through slot 40, and the end of the top piece 6 does not enter the through slot 40. First, the pin insert 1 is translated into the through slot 40 with the bottom plate 11 toward the front end opening of the through slot 40. The bottom surface of the bottom plate 11 is in contact with the front end surface of the first frame 2, and the convex portion 41 corresponds to the notch 111. Then, a group of positioning posts 5 at the front end of the first frame 2 are inserted into the injection mold to limit the relative position between the first frame 2 and the injection mold. The injection mold is provided with positioning holes (not shown) corresponding to the positioning posts 5. At this time, the front end opening of the through slot 40 is opposite to the position where the pin insert 1 is inserted into the mold. Since the convex portion 41 is aligned with the pin insert 1 in the notch 4 01 is limited in the extension direction so that the pin insert 1 cannot fall out of the groove 40 from the notch 401. Then, the second frame 3 is driven to drive a group of top pieces 6 to move along the extension direction of the groove 40 toward the direction close to the first frame 2, and the second frame 3 is continued to be driven. The ends of a group of top pieces 6 support the bottom plate 11 to push the pin insert 1 out of the groove 40. When the second frame 3 reaches the preset stroke, a group of top pieces 6 completely push the pin insert 1 out of the groove 40. At this time, the pin insert 1 is installed in the injection mold, and the installation fixture is pulled out to complete the installation of the pin insert 1. Since one end of the bottom plate 11 extends out of the outer end of the mounting seat 4 from the notch 401, when an erroneous operation such as reverse installation occurs, the end of the pin insert 1 extending from the notch 401 can be pinched to take out one pin insert 1 separately, without having to eject all the pin inserts 1 at once through the second frame 3. A group of mounting seats 4 includes four mounting seats 4 , each mounting seat 4 is provided with three through slots 40 , and each through slot 40 corresponds to two top pieces 6 .

[0026] In this embodiment, a reset assembly 7 is provided between the first frame body 2 and the second frame body 3. The reset assembly 7 includes a set of elastic members 71 and a set of guide rods 72. The set of elastic members 71 and the guide rods 72 are respectively arranged at the rear end of the first frame body 2. One end of the set of elastic members 71 away from the first frame body 2 abuts against the front end of the second frame body 3. The second frame body 3 is sleeved on the set of guide rods 72, and the second frame body 3 can move axially along the guide rods 72. The reset assembly 7 is used for resetting the second frame body 3. When the installation jig pushes the pin insert 1 into the injection mold, the second frame body 3 moves axially along the guide rods 72 in the direction close to the first frame body 2, and the set of elastic members 71 are compressed under the action of the second frame body 3. After the installation jig pushes the pin insert 1 into the injection mold, under the action of the set of elastic members 71, the set of elastic members 71 push the second frame body 3 to move axially along the set of guide rods 72 in the direction away from the first frame body 2, and the set of ejector members 6 retract to a preset position along the extending direction of the through slot 40. The elastic members 71 are springs. The set of elastic members 71 includes 4 springs. The set of guide rods 72 includes two guide rods 72. The guide rods 72 are connected to the first frame body 2 by screws. A linear bearing 9 is provided between the guide rods 72 and the second frame body 3. The linear bearing 9 is sleeved on the guide rods 72, and the linear bearing 9 is installed on the second frame body 3.

[0027] In this embodiment, a set of first recesses 20 are provided at the rear end of the first frame body 2, and a set of second recesses 30 corresponding to the set of first recesses 20 one by one are provided at the front end of the second frame body 3. The numbers of the first recesses 20 and the second recesses 30 respectively correspond to the elastic members 71. The front and rear ends of the elastic members 71 are respectively received in the second recesses 30 and the first recesses 20. The first recesses 20 and the second recesses 30 are respectively used for receiving the front and rear ends of the elastic members 71, and axially and radially limit the elastic members 71 to prevent the elastic members 71 from shifting during the movement of the second frame body 3 away from or close to the first frame body 2. The number of the set of first recesses 20 is 4. Correspondingly, the number of the set of second recesses 30 is also 4.

[0028] In this embodiment, it further includes a limit assembly 8. The limit assembly 8 is arranged at the rear end of the first frame body 2. The limit assembly 8 includes a set of limit protrusions 81. The set of limit protrusions 81 are used for limiting the forward movement stroke of the second frame body 3. The limit protrusions 81 are used for limiting the second frame body 3. When the installation jig pushes the pin insert 1 into the injection mold and the front end of the second frame body 3 abuts against the set of limit protrusions 81, the second frame body 3 cannot continue to move in the direction close to the first frame body 2. Since the set of ejector members 6 are arranged on the second frame body 3, the limit protrusions 81 also limit the set of ejector members 6 at the same time to prevent the set of ejector members 6 from damaging the inside of the injection mold. The number of the limit protrusions 81 is 2.

[0029] In this embodiment, the limiting component 8 further includes a limiting post 82. The limiting post 82 is axially adjustable and installed at the rear end of the first frame 2. A limiting protrusion 821 protrudes radially from one end of the limiting post 82 away from the first frame 2. The second frame 3 is sleeved on the limiting post 82. The second frame 3 is located between the limiting protrusion 821 and the first frame 2. The limiting protrusion 821 is used to limit the backward movement stroke of the second frame 3. The limiting protrusion 821 is used to axially connect the second frame 3 and the first frame 2 and axially limit the second frame 3. Under the action of a set of elastic members 71, the second frame 3 moves axially away from the first frame 2 along the limiting post 82. When the rear end of the second frame 3 abuts against the front end of the limiting protrusion 821, the second frame 3 cannot continue to move away from the first frame 2, thus completing the limitation of the second frame 3. At the same time, by adjusting the distance between the front end of the limiting protrusion 821 and the rear end of the first frame 2, the preset distance between the first frame 2 and the second frame 3 is adjusted, thereby adjusting the preset position of the top member 6. The limiting post 82 is a screw, and its front end is threadedly connected to the first frame 2. The screw head axially limits the second frame 3.

[0030] In this embodiment, the mounting base 4 is detachably installed on the first frame 2. A clamping protrusion 42 extends on the side of the mounting base 4 close to the second frame 3. A notch 21 adapted to the clamping protrusion 42 is provided on the first frame 2. A mounting base pressing plate 22 is provided at the rear end of the first frame 2. The mounting base pressing plate 22 is arranged at the rear end of the mounting base 4 and is detachably connected to the first frame 2. The notch 21 is used for limiting and positioning during the installation of the mounting base 4. The mounting base 4 is installed on the first frame 2. When the front end of the clamping protrusion 42 fits against the bottom of the notch 21, the limitation of the mounting base 4 is completed. The mounting base 4 is detachably installed on the first frame 2. When the mounting base 4 is worn or damaged, it is convenient to repair and replace it in time without replacing the first frame 2, improving the economy of the installation jig. The mounting base pressing plate 22 is detachably installed on the rear end of the first frame 2 by screws.

[0031] In this embodiment, the top piece 6 is detachably mounted on the second frame body 3, and a top piece limiting protrusion 61 is provided on the end of the top piece 6 away from the first frame body 2. A top piece mounting countersunk hole 31 adapted to the top piece 6 is provided on the rear end of the second frame body 3. The top piece 6 is installed in the top piece mounting countersunk hole 31. A top piece pressure plate 32 is provided on the rear end of the second frame body 3. The top piece pressure plate 32 is arranged at the rear end of the top piece limiting protrusion 61, and the top piece pressure plate 32 is detachably connected to the second frame body 3. The top piece installation countersunk hole 31 is used to install the top piece 6; the top piece limiting protrusion 61 is used to axially limit the top piece 6. When the front end of the top piece limiting protrusion 61 is in contact with the bottom surface of the top piece installation countersunk hole 31, the top piece 6 cannot move in the direction close to the first frame 2; the top piece pressure plate 32 is used to resist the top piece limiting protrusion 61 to prevent the top piece 6 from shifting during the process of the top piece 6 ejecting the pin insert 1; when the top piece 6 is worn and damaged, it is convenient to repair and replace it in time without replacing the second frame 3, thereby improving the economy of the installation fixture. The top piece pressure plate 32 is detachably mounted on the rear end of the second frame 3 by screws.

[0032] In this embodiment, it also includes: a grip assembly 10, which is installed at the rear end of the second frame 3. The grip assembly 10 includes: a group of mounting rods 101 and a handle 102. A group of mounting rods 101 is arranged between the second frame 3 and the handle 102, and the two ends of a group of mounting rods 101 are respectively connected to the rear end of the second frame 3 and the front end of the handle 102. The operator of the grip assembly 10 holds the handle 102, which makes it more convenient to operate the installation fixture. There are two sets of mounting rods 101, and a set of mounting rods 101 is connected to the second frame 3 and the handle 102 by screws.

[0033] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanation here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A pin insert installation jig for installing a pin insert (1) into an injection mold before injection molding, characterized in that: include: A first frame (2), a second frame (3), and a group of mounting seats (4), wherein the second frame (3) is slidably mounted on the rear end of the first frame (2), the pin insert (1) comprises: a bottom plate (11), a vertical plate (12), the vertical plate (12) being arranged on the bottom plate (11), the bottom plate (11) being provided with a notch (111), a group of positioning columns (5) being arranged on the front end of the first frame (2), a group of mounting seats (4) being mounted on the front end of the first frame (2), the mounting seats (4) being provided with a through slot (40) extending forward and backward, the through slot (40) comprising a notch (401) extending laterally out of the mounting seat (4), the pin insert ( 1) The bottom plate (11) is translated toward the front end opening of the through groove (40) and inserted into the through groove (40), during which one end of the bottom plate (11) extends out of the notch (401) to the outer end of the mounting seat (4); a convex portion (41) adapted to the notch (111) is protruded from the inner wall of the through groove (40), the convex portion (41) being used to limit the position of the pin insert (1) in the extension direction of the notch (401); a group of top pieces (6) are provided on the second frame (3), the group of top pieces (6) facing the through groove (40), and the second frame (3) is used to drive the top pieces (6) to move forward to push out the pin insert (1) placed in the through groove (40).

2. A pin insert installation jig according to claim 1, characterized in that: A reset assembly (7) is provided between the first frame (2) and the second frame (3), the reset assembly (7) comprising: a group of elastic members (71) and a group of guide rods (72), the group of elastic members (71) and the guide rods (72) being respectively arranged at the rear end of the first frame (2), one end of the group of elastic members (71) away from the first frame (2) being in contact with the front end of the second frame (3), the second frame (3) being sleeved on the group of guide rods (72), and the second frame (3) being movable axially along the guide rods (72).

3. A pin insert installation jig according to claim 2, characterized in that: A group of first recesses (20) is provided on the rear end of the first frame (2), and a group of second recesses (30) corresponding one-to-one to the group of first recesses (20) is provided on the front end of the second frame (3), the number of the first recesses (20) and the number of the second recesses (30) respectively corresponding to the elastic member (71), and the second recesses (30) and the first recesses (20) respectively accommodate the front and rear ends of the elastic member (71).

4. The pin insert installation jig according to claim 1, characterized in that: Also includes: A limit assembly (8), the limit assembly (8) being arranged at the rear end of the first frame (2), the limit assembly (8) comprising a group of limit convex parts (81), the group of limit convex parts (81) being used to limit the travel of the second frame (3) moving forward.

5. A pin insert installation jig according to claim 4, characterized in that: The limiting assembly (8) further comprises: a limiting column (82), the limiting column (82) being axially adjustable and mounted on the rear end of the first frame (2), the limiting column (82) having a limiting protrusion (821) radially protruding upward at one end away from the first frame (2), the second frame (3) being sleeved on the limiting column (82), the second frame (3) being located between the limiting protrusion (821) and the first frame (2), the limiting protrusion (821) being used to limit the travel of the second frame (3) moving backward.

6. The pin insert installation jig according to claim 1, characterized in that: The mounting seat (4) is detachably mounted on the first frame (2); a locking protrusion (42) is extended from one side of the mounting seat (4) near the second frame (3); a notch (21) adapted to the locking protrusion (42) is provided on the first frame (2); a mounting seat pressure plate (22) is provided at the rear end of the first frame (2); the mounting seat pressure plate (22) is arranged at the rear end of the mounting seat (4); and the mounting seat pressure plate (22) is detachably connected to the first frame (2).

7. The pin insert installation jig according to claim 1, characterized in that: The top piece (6) is detachably mounted on the second frame (3); a top piece limiting protrusion (61) is provided on one end of the top piece (6) away from the first frame (2); a top piece mounting countersunk hole (31) adapted to the top piece (6) is provided on the rear end of the second frame (3); the top piece (6) is mounted in the top piece mounting countersunk hole (31); a top piece pressure plate (32) is provided on the rear end of the second frame (3); the top piece pressure plate (32) is arranged at the rear end of the top piece limiting protrusion (61); and the top piece pressure plate (32) is detachably connected to the second frame (3).

8. The pin insert installation jig according to claim 1, characterized in that: Also includes: A gripping assembly (10), the gripping assembly (10) being mounted at the rear end of the second frame (3), the gripping assembly (10) comprising: a group of mounting rods (101) and a handle (102), the group of mounting rods (101) being arranged between the second frame (3) and the handle (102), and the two ends of the group of mounting rods (101) being respectively connected to the rear end of the second frame (3) and the front end of the handle (102).

Images