CN116372427A - Injection molding machine frame welding device - Google Patents

Abstract

The application discloses injection molding machine frame welding set relates to welding technique, and it includes the organism, the organism includes workstation and manipulator, the workstation supplies the injection molding machine frame to place, the manipulator is equipped with the welder, the welder is used for welding injection molding machine frame. Through above-mentioned technical scheme, in the in-service use, place injection molding machine frame in the workstation, remove the welder and weld through the manipulator, compare in manual welding, it is more convenient, and can realize the volume production when the injection molding machine frame demand is great, manufacturing efficiency is higher.

Description

Injection molding machine frame welding device

Technical Field

The present application relates to the field of welding technology, and more particularly, to an injection molding machine frame welding apparatus.

Background

Injection molding machines are also known as injection molding machines or injection molding machines. It is a main forming equipment for making thermoplastic plastics or thermosetting plastics into various shaped plastic products by using plastic forming mould. The injection molding machine has the capability of forming plastic products with complex appearance, accurate size or dense texture with metal inserts at one time, and is widely applied to various fields of national defense, electromechanics, automobiles, transportation, building materials, packaging, agriculture, religious and health and daily life of people.

In the existing injection molding machine manufacturing process, the injection molding machine frame is often formed by adopting manual welding, and the manual welding mode cannot well finish feeding when the injection molding machine frame requirement is large, so that the manufacturing efficiency is low and the improvement is provided.

Disclosure of Invention

In order to improve the problem that the manual welding efficiency of the injection molding machine frame is lower, the application provides an injection molding machine frame welding device.

The application provides a welding set of injection molding machine frame adopts following technical scheme:

the utility model provides an injection molding machine frame welding set, includes the organism, the organism includes workstation and manipulator, the workstation supplies the injection molding machine frame to place, the manipulator is equipped with the welder, the welder is used for welding the injection molding machine frame.

Through above-mentioned technical scheme, in the in-service use, place injection molding machine frame in the workstation, remove the welder and weld through the manipulator, compare in manual welding, it is more convenient, and can realize the volume production when the injection molding machine frame demand is great, manufacturing efficiency is higher.

Further, the workbench is provided with an abutting hole and an installation cavity, the abutting hole penetrates through the workbench to the installation cavity, the bottom of the installation cavity is provided with an abutting spring, one end of the abutting spring, which is far away from the bottom of the installation cavity, is connected with an abutting rack, the abutting rack penetrates through the abutting hole to protrude out of the surface of the workbench, and the elastic force of the abutting spring limits the abutting rack to move towards the direction close to the bottom of the installation cavity; the workbench is provided with a limiting hole which is in a strip shape, the limiting hole penetrates through the workbench to the mounting cavity, the mounting cavity is provided with a gear set and a limiting piece, and one end of the limiting piece, which is far away from the bottom of the mounting cavity, is positioned in the mounting cavity; when the workbench is placed on the injection molding machine frame, the abutting rack moves downwards to the position where the abutting rack is away from the bottom of the mounting cavity and is flush with the surface of the workbench, the gear set rotates to enable the limiting piece to protrude upwards and protrude out of the surface of the workbench, and at the moment, the limiting piece abuts against the side wall of the injection molding machine frame.

Through above-mentioned technical scheme, set up butt rack and gear train, when the injection molding machine frame pushes down the butt rack and makes the butt rack move down, the gear train rotates and makes the locating part move up, and the locating part contradicts injection molding machine frame lateral wall in order to restrict the removal of injection molding machine frame, has reduced the circumstances that the injection molding machine frame atress was skew in welding process for the welding is more accurate.

Further, a limiting groove is formed in the wall of the limiting hole, a reset spring is arranged at the bottom of the limiting groove, a limiting block is arranged at one end, far away from the bottom of the limiting groove, of the reset spring, a limiting plate is hinged to the workbench, and the limiting plate limits the limiting block to move in the direction far away from the bottom of the limiting groove; the limiting piece comprises a limiting rack, a sliding plate and a sliding block, wherein the sliding plate is positioned at one end of the limiting rack, which is far away from the bottom of the mounting cavity, the sliding block is positioned at one end of the sliding plate, which is far away from the limiting rack, the sliding block slides on the limiting rack, and the sliding direction of the sliding block is consistent with the length direction of the limiting hole; when the limiting rack moves upwards, the sliding block moves upwards to enable the limiting plate to rotate; when the limiting plate rotates to be separated from the limiting block, the reset spring pushes the limiting block and the sliding block to move in the direction away from the bottom of the limiting groove until the sliding block abuts against the frame of the injection molding machine.

Through above-mentioned technical scheme, set up the subassembly such as stopper, sliding block, when sliding block promotes the limiting plate to rotate to when separating with the stopper, reset spring's elasticity makes stopper and sliding block move and support tight injection molding machine frame towards the direction of keeping away from the spacing groove tank bottom, through this kind of mode, has further restricted the skew of injection molding machine frame, and secondly, different types of injection molding machine frame size is different in the course of working, supports tightly through this kind of mode, is applicable to the injection molding machine frame of more sizes, has promoted the application scope of organism.

Further, the workbench is provided with a fixing piece; when the sliding block abuts against the frame of the injection molding machine, the fixing piece limits the sliding block to move towards the direction close to the bottom of the limiting groove.

Through the technical scheme, in the actual processing process, the sliding block is abutted against the injection molding machine frame through the elastic force of the reset spring, so that the situation that the injection molding machine frame shakes and deviates still exists, and the fixing piece is arranged, so that the situation that the sliding block moves to cause the deviation of the injection molding machine frame in the processing process is further reduced, and the welding of the injection molding machine frame is more stable.

Further, a positioning groove is formed in one end, far away from the bottom of the limiting groove, of the sliding block, a fixed groove is formed in the side wall of the positioning groove, the fixed piece is located in the fixed groove, the fixed piece comprises a fixed spring and a fixed block, the fixed spring is located at the bottom of the fixed groove, one end, far away from the bottom of the fixed groove, of the fixed spring is connected with the fixed block, the fixed block protrudes out of the side wall of the positioning groove, the fixed block is provided with a first inclined surface, the first inclined surface is located at one end, far away from the bottom of the positioning groove, of the fixed block, and the first inclined surface extends towards the direction close to the bottom of the fixed groove along the direction far away from the bottom of the positioning groove; the wall of the limiting hole is provided with a fixing rod, and a clamping block is sleeved on the fixing rod; when the sliding block is close to the fixing rod, the fixing rod is embedded into the positioning groove, the clamping block abuts against the inclined surface to push the fixing block to move towards the direction close to the bottom of the positioning groove, until the distance from one end of the clamping block away from the bottom of the positioning groove to the bottom of the positioning groove is smaller than the distance from one end of the fixing block close to the bottom of the positioning groove, and at the moment, the fixing block resets and limits the clamping block to be separated from the positioning groove.

Through above-mentioned technical scheme, through setting up subassemblies such as fixed block and fixture block, when the dead lever embedding constant head tank, the fixture block contradicts inclined plane one and makes the fixed block remove towards the direction that is close to the fixed slot tank bottom, and when the piece that slides continued to remove, the fixed block resets and restrict the fixture block and deviate from the constant head tank, carries out the fixed of the piece that slides through this kind of mode, and is more convenient, has also further reduced the condition that the injection molding machine frame takes place the skew in welding process for the welding is more stable.

Further, the fixed rod is sleeved with a release block, the release block slides on the fixed rod, the release block slides along the length direction of the fixed rod, and the fixed rod is positioned at one side of the clamping block away from the bottom of the positioning groove; the second inclined surface is positioned at one end of the release block away from the clamping block, and the second inclined surface is tapered along the direction away from the clamping block.

According to the technical scheme, the ejection block is arranged, when the injection molding machine frame is required to be taken out in actual use, the injection molding machine frame can still be taken out from the upper surface of the workbench through the abutting of the sliding block, then the sliding block is moved in the direction away from the limiting block, so that the ejection block is embedded into the positioning groove, when the inclined surface II abuts against the fixed block, the sliding block is moved in the direction close to the bottom of the limiting groove, so that the fixed block pushes the ejection block until the ejection block abuts against the clamping block, and then the fixed block is stressed to move in the direction close to the bottom of the limiting groove by the continued movement of the sliding block, so that the fixed rod is separated from the positioning groove; compared with the mode that the fixing rod is separated from the positioning groove by embedding a hand or other devices into the positioning groove so that the fixing block moves towards the direction close to the bottom of the fixing groove, the mode that the separating block is arranged is more convenient.

Further, the clamping blocks and the release blocks are respectively provided with two, the clamping blocks and the release blocks are in one-to-one correspondence, and the fixing rod sequentially comprises the clamping blocks, the release blocks, the clamping blocks and the release blocks along the direction away from the bottom of the positioning groove.

Through above-mentioned technical scheme, in the in-service use, the existence of injection molding machine frame is several different models, consequently is equipped with two fixture blocks and deviate from the piece, is applicable to the welding of the injection molding machine frame of different models more for holistic suitability is higher.

Further, the sliding block is provided with an elastic piece, and the elastic piece is positioned at one end of the sliding block, which is provided with a positioning groove.

Through above-mentioned technical scheme, set up the elastic component, contradict injection molding machine frame through the elastic component, reduced the influence of injection molding machine frame vibration to the sliding block, secondly, also be convenient for take out injection molding machine frame, reduced the condition that injection molding machine frame and sliding block directly contradict and lead to the part to scratch when taking out.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) By arranging the mechanical arm, the welding is more convenient, mass production can be realized when the demand of the injection molding machine frame is larger, and the manufacturing efficiency is higher;

(2) By arranging the abutting racks and the gear sets, the limiting piece abuts against the side wall of the injection molding machine frame to limit the movement of the injection molding machine frame, so that the situation that the injection molding machine frame is stressed and deviated in the welding process is reduced, and the welding is more accurate;

(3) The fixing block and the clamping block are arranged to fix the sliding block, so that the situation that the frame of the injection molding machine is deviated in the welding process is further reduced, and the welding is more stable.

Drawings

Fig. 1 is an overall schematic of an embodiment.

Fig. 2 is a schematic cross-sectional view of an embodiment.

Fig. 3 is a partial schematic view of an embodiment.

Fig. 4 is an enlarged schematic view of a in fig. 2.

Fig. 5 is an enlarged schematic view of B in fig. 2.

Reference numerals: 1. a body; 2. a work table; 3. a manipulator; 4. a welder; 5. an abutment hole; 6. a mounting cavity; 7. abutting against the spring; 8. abutting against the rack; 9. a gear set; 91. abutting against the gear; 92. a conveyor belt; 93. a limit gear; 10. a limiting piece; 101. a limit rack; 102. a slip plate; 103. a sliding block; 11. a limiting hole; 12. a limit groove; 13. a return spring; 14. a limiting block; 15. a limiting plate; 16. an elastic member; 17. a positioning groove; 18. a fixing groove; 19. a fixing member; 191. a fixed spring; 192. a fixed block; 20. an inclined plane I; 21. a fixed rod; 22. a clamping block; 23. removing the block; 24. an inclined plane II; 25. and an inclined surface III.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses an injection molding machine frame welding device.

Examples:

referring to fig. 1 and 2, an injection molding machine frame welding device comprises a machine body 1, wherein the machine body 1 comprises a workbench 2 and a manipulator 3, the workbench 2 is used for placing an injection molding machine frame, the manipulator 3 is provided with a welder 4 and a control unit, the welder 4 is used for welding the injection molding machine frame, and the control unit is used for controlling the manipulator 3.

The table 2 is provided with an abutment hole 5 and a mounting cavity 6, and the abutment hole 5 penetrates the table 2 to the mounting cavity 6. The bottom of the installation cavity 6 is provided with an abutting spring 7, the abutting spring 7 is connected with an abutting rack 8, the abutting rack 8 is located at one end of the abutting spring 7 away from the bottom of the installation cavity 6, and the abutting rack 8 penetrates through the abutting hole 5 to protrude out of the surface of the workbench 2. The elastic force of the abutting spring 7 limits the abutting rack 8 to move towards the direction approaching the bottom of the mounting cavity 6. When the injection molding machine frame is placed on the surface of the workbench 2, the injection molding machine frame abuts against one end of the rack 8 away from the cavity bottom of the installation cavity 6 and enables the abutting rack 8 to move towards the direction close to the cavity bottom of the installation cavity 6.

Referring to fig. 2 and 3, the installation cavity 6 is provided with a gear set 9 and a limiting member 10, the gear set 9 comprises an abutting gear 91, a conveying belt 92 and a limiting gear 93, the abutting gear 91 abuts against the tooth part of the abutting rack 8, and the abutting gear 91 drives the limiting gear 93 to rotate through the conveying belt 92. One end of the limiting piece 10 far away from the bottom of the mounting cavity 6 is positioned in the mounting cavity 6, the limiting gear 93 is connected with the limiting piece 10, and the rotation of the abutting gear 91 controls the movement of the limiting piece 10 along the vertical direction. The workbench 2 is provided with a limiting hole 11, the limiting hole 11 is in a strip shape, and the limiting hole 11 penetrates through the workbench 2 to the mounting cavity 6. When the abutting rack 8 moves downwards to the position that one end of the abutting rack, which is far away from the bottom of the installation cavity 6, is flush with the surface of the workbench 2, the gear set 9 rotates to enable the limiting piece 10 to protrude upwards and protrude out of the surface of the workbench 2.

The limiting piece 10 comprises a limiting rack 101, a sliding plate 102 and a sliding block 103, wherein the limiting rack 101 is meshed with the limiting gear 93, the sliding plate 102 is located at one end, far away from the bottom of the installation cavity 6, of the limiting rack 101, the length direction of the sliding plate 102 is consistent with the length direction of the limiting hole 11, the sliding block 103 is located at one end, far away from the limiting rack 101, of the sliding plate 102, the sliding block 103 slides on the limiting rack 101, and the sliding direction of the sliding block 103 is consistent with the length direction of the sliding plate 102. In practical use, the limiting parts 10 and the gear sets 9 are all provided with four, and the four limiting parts 10 respectively abut against the periphery of the injection molding machine frame to limit the deflection of the injection molding machine frame.

Referring to fig. 2 and 4, the wall of the limiting hole 11 is provided with a limiting groove 12, the notch of the limiting groove 12 faces the abutting hole 5, the bottom of the limiting groove 12 is provided with a reset spring 13, the reset spring 13 is connected with a limiting block 14, the limiting block 14 is located at one end, far away from the bottom of the limiting groove 12, of the reset spring 13, and the elastic force of the reset spring 13 limits the reset block to move towards the direction close to the bottom of the limiting groove 12. The workbench 2 is hinged with a limiting plate 15, the limiting plate 15 is positioned above the limiting hole 11, and the limiting plate 15 is attached to the upper end face of the workbench 2. The limiting plate 15 is used for limiting the limiting block 14 to move towards the direction away from the bottom of the limiting groove 12.

When the abutting rack 8 moves downwards, the gear set 9 enables the limiting rack 101 to move upwards, and the sliding block 103 moves upwards to push the limiting plate 15 so that the limiting plate 15 rotates. When the limiting plate 15 rotates to be out of contact with the limiting block 14, the reset spring 13 pushes the limiting block 14 and the sliding block 103 to move in a direction away from the bottom of the limiting groove 12.

The sliding block 103 is provided with an elastic piece 16, and the elastic piece 16 is positioned at one end of the sliding block 103 away from the bottom of the limiting groove 12. The elastic member 16 is used for abutting against the injection molding machine frame, and secondly, the elastic member 16 is arranged to facilitate the taking out of the subsequent injection molding machine frame. In actual use, the elastic member 16 may be rubber, alternatively, the elastic member 16 may be silica gel. The sliding block 103 is provided with a positioning groove 17, the positioning groove 17 is positioned at one end of the sliding block 103 far away from the bottom of the limiting groove 12, the side wall of the positioning groove 17 is provided with a fixing groove 18, the bottom of the fixing groove 18 is provided with a fixing piece 19, and the fixing piece 19 is used for limiting the sliding block 103 to move towards the direction close to the bottom of the limiting groove 12. The fixing piece 19 comprises a fixing spring 191 and a fixing block 192, the fixing spring 191 is located at the bottom of the fixing groove 18, one end, away from the bottom of the fixing groove 18, of the fixing spring 191 is connected with the fixing block 192, the fixing block 192 protrudes out of the side wall of the positioning groove 17, the fixing block 192 is provided with a first inclined surface 20, the first inclined surface 20 is located at one end, away from the bottom of the positioning groove 17, of the fixing block 192, and the first inclined surface 20 extends in a direction away from the bottom of the positioning groove 17 towards a direction close to the bottom of the fixing groove 18.

Referring to fig. 2 and 5, the wall of the limiting hole 11 is provided with a fixing rod 21, the fixing rod 21 is located at one side of the length direction of the wall of the limiting hole 11, and the fixing rod 21 corresponds to the positioning groove 17. The dead lever 21 cover is equipped with fixture block 22 and deviate from piece 23, and fixture block 22 is equipped with inclined plane three 25, and inclined plane three 25 is located the one end that fixture block 22 is close to the constant head tank 17 tank bottom, and inclined plane three 25 is the divergent form towards the direction of keeping away from the constant head tank 17 tank bottom, and the setting of inclined plane three 25 is convenient for conflict fixed block 192 for fixed block 192 moves towards the direction that is close to the constant head tank 18 tank bottom, has reduced the wearing and tearing of fixed block 192.

The release block 23 is located at one side of the clamping block 22 away from the bottom of the positioning groove 17, the release block 23 slides on the fixed rod 21, and the sliding direction of the release block 23 is the length direction of the fixed rod 21. The disengagement block 23 is provided with a second inclined surface 24, the second inclined surface 24 is positioned at one end of the disengagement block 23 away from the clamping block 22, the second inclined surface 24 is gradually expanded along the direction close to the clamping block 22, and the second inclined surface 24 is convenient for the fixed block 192 to move towards the direction close to the bottom of the fixed groove 18.

When the sliding block 103 moves towards the direction approaching to the fixing rod 21, the fixing rod 21 is embedded into the positioning groove 17 along with sliding of the sliding block 103, the continuous movement of the sliding block 103 enables the clamping block 22 to abut against the first inclined surface 20, the first inclined surface 20 is pressed, the fixing block 192 moves towards the direction approaching to the bottom of the fixing groove 18, and the fixing spring 191 is contracted. As the sliding block 103 continues to move, the distance from the end of the clamping block 22 away from the bottom of the positioning groove 17 to the bottom of the positioning groove 17 is smaller than the distance from the end of the fixing block 192 close to the bottom of the positioning groove 17, and the elastic force of the fixing spring 191 makes the fixing block 192 move in a direction away from the bottom of the fixing groove 18. At this time, when the slider 103 moves in a direction approaching the bottom of the limiting groove 12, the slider 103 cannot be separated from the fixing lever 21 due to the restriction of the fixing block 192. When separation is needed, the elastic piece 16 is extruded first, the injection molding machine frame is taken out, then the sliding block 103 is moved towards the direction away from the bottom of the limiting groove 12, the first inclined surface 20 is abutted against the falling block 23, the fixed block 192 is moved towards the direction close to the bottom of the fixed groove 18, when the distance from one end of the falling block 23 away from the bottom of the locating groove 17 to the bottom of the locating groove 17 is smaller than the distance from one end of the fixed block 192 close to the bottom of the locating groove 17, the sliding block 103 is moved towards the bottom of the limiting groove 12, the fixed block 192 abuts against the second inclined surface 24, the falling block 23 is driven to move towards the direction close to the clamping block 22, the fixed block 192 is moved towards the bottom of the fixed groove 18 after the falling block 23 abuts against the clamping block 22, and the fixed rod 21 and the sliding block 103 are separated from each other.

In actual use, the fixing rod 21 is provided with two clamping blocks 22 and two releasing blocks 23, the clamping blocks 22 and the releasing blocks 23 are in one-to-one correspondence, and the fixing rod 21 sequentially comprises the clamping blocks 22, the releasing blocks 23, the clamping blocks 22 and the releasing blocks 23 along the direction away from the bottom of the positioning groove 17. Two clamping blocks 22 and two releasing blocks 23 are arranged so as to be convenient for the correspondence of different types of injection molding machine frames, and the overall universality is improved.

The working principle of the embodiment is as follows:

during actual welding, the injection molding machine frame is placed on the upper surface of the workbench 2, the injection molding machine frame abuts against one end of the rack 8 away from the bottom of the mounting cavity 6, so that the abutting rack 8 moves downwards, the gear set 9 rotates to drive the limiting rack 101 to move upwards, the limiting rack 101 moves upwards to enable the upper end face of the sliding block 103 to abut against and push the limiting plate 15 to rotate, when the limiting plate 15 rotates to be out of contact with the limiting block 14, the compressed reset spring 13 resets and pushes the reset block and the sliding block 103 to move in the direction away from the bottom of the limiting groove 12, the fixing rod 21 is embedded into the positioning groove 17, the clamping block 22 on the fixing rod 21 enables the fixing block 192 to move in the direction close to the bottom of the fixing groove 18, the sliding block 103 is limited to move in the direction close to the bottom of the limiting groove 12 through the fixing block 192, and the elastic piece 16 abuts against the outer wall of the injection molding machine frame at the moment.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides an injection molding machine frame welding set, includes organism (1), its characterized in that: the machine body (1) comprises a workbench (2) and a manipulator (3), wherein the workbench (2) is used for placing an injection molding machine frame, the manipulator (3) is provided with a welder (4), and the welder (4) is used for welding the injection molding machine frame.

2. An injection molding machine frame welding apparatus as defined in claim 1, wherein: the workbench (2) is provided with an abutting hole (5) and a mounting cavity (6), the abutting hole (5) penetrates through the workbench (2) to the mounting cavity (6), the cavity bottom of the mounting cavity (6) is provided with an abutting spring (7), one end, far away from the cavity bottom of the mounting cavity (6), of the abutting spring (7) is connected with an abutting rack (8), the abutting rack (8) penetrates through the abutting hole (5) to protrude out of the surface of the workbench (2), and the elastic force of the abutting spring (7) limits the abutting rack (8) to move towards the direction close to the cavity bottom of the mounting cavity (6);

the workbench (2) is provided with a limiting hole (11), the limiting hole (11) is in a strip shape, the limiting hole (11) penetrates through the workbench (2) to the mounting cavity (6), the mounting cavity (6) is provided with a gear set (9) and a limiting piece (10), and one end, far away from the bottom of the mounting cavity (6), of the limiting piece (10) is positioned in the mounting cavity (6);

when workstation (2) are placed to injection molding machine frame, butt rack (8) moves down to the one end that self kept away from installation cavity (6) chamber end flush with workstation (2) surface, and gear train (9) rotate and make locating part (10) outstanding in the upward movement and outstanding in workstation (2) surface, and locating part (10) conflict injection molding machine frame lateral wall this moment.

3. An injection molding machine frame welding apparatus as defined in claim 2, wherein: the hole wall of the limit hole (11) is provided with a limit groove (12), the bottom of the limit groove (12) is provided with a return spring (13), one end of the return spring (13) away from the bottom of the limit groove (12) is provided with a limit block (14), the workbench (2) is hinged with a limit plate (15), and the limit plate (15) limits the limit block (14) to move towards the direction away from the bottom of the limit groove (12);

the limiting piece (10) comprises a limiting rack (101), a sliding plate (102) and a sliding block (103), wherein the sliding plate (102) is positioned at one end, far away from the cavity bottom of the mounting cavity (6), of the limiting rack (101), the sliding block (103) is positioned at one end, far away from the limiting rack (101), of the sliding plate (102), the sliding block (103) slides on the limiting rack (101), and the sliding direction of the sliding block (103) is consistent with the length direction of the limiting hole (11);

when the limiting rack (101) moves upwards, the sliding block (103) moves upwards to enable the limiting plate (15) to rotate; when the limiting plate (15) rotates to be separated from the limiting block (14), the reset spring (13) pushes the limiting block (14) and the sliding block (103) to move in the direction away from the bottom of the limiting groove (12) until the sliding block (103) abuts against the injection molding machine frame.

4. A welding apparatus for an injection molding machine frame according to claim 3, wherein: the sliding block (103) is provided with a fixing piece (19);

when the sliding block (103) abuts against the injection molding machine frame, the fixing piece (19) limits the sliding block (103) to move towards the direction close to the bottom of the limiting groove (12).

5. An injection molding machine frame welding apparatus as defined in claim 4, wherein: the sliding block (103) is provided with a positioning groove (17) at one end far away from the bottom of the limiting groove (12), the side wall of the positioning groove (17) is provided with a fixing groove (18), a fixing piece (19) is positioned in the fixing groove (18), the fixing piece (19) comprises a fixing spring (191) and a fixing block (192), the fixing spring (191) is positioned at the bottom of the fixing groove (18), one end of the fixing spring (191) far away from the bottom of the fixing groove (18) is connected with the fixing block (192), the fixing block (192) protrudes out of the side wall of the positioning groove (17), the fixing block (192) is provided with an inclined surface I (20), the inclined surface I (20) is positioned at one end far away from the bottom of the positioning groove (17) of the fixing block (192), and the inclined surface I (20) extends along the direction far away from the bottom of the positioning groove (17) towards the direction near the bottom of the fixing groove (18);

the hole wall of the limit hole (11) is provided with a fixed rod (21), and the fixed rod (21) is sleeved with a clamping block (22);

when the sliding block (103) is close to the fixed rod (21), the fixed rod (21) is embedded into the positioning groove (17), the clamping block (22) is abutted against the inclined surface I (20) and pushes the fixed block (192) to move towards the direction close to the bottom of the fixed groove (18) until the distance from one end of the clamping block (22) away from the bottom of the positioning groove (17) to the bottom of the positioning groove is smaller than the distance from one end of the fixed block (192) close to the bottom of the positioning groove (17), and at the moment, the fixed block (192) resets and limits the clamping block (22) to be separated from the positioning groove (17).

6. An injection molding machine frame welding apparatus as defined in claim 5, wherein: the fixing rod (21) is sleeved with a release block (23), the release block (23) slides on the fixing rod (21), the release block (23) slides along the length direction of the fixing rod (21), and the fixing rod (21) is positioned on one side of a clamping block (22) far away from the bottom of the positioning groove (17); the falling-out block (23) is provided with a second inclined surface (24), the second inclined surface (24) is positioned at one end of the falling-out block (23) far away from the clamping block (22), and the second inclined surface (24) is gradually reduced along the direction far away from the clamping block (22).

7. An injection molding machine frame welding apparatus as defined in claim 6, wherein: the clamping blocks (22) and the release blocks (23) are respectively provided with two, the clamping blocks (22) and the release blocks (23) are in one-to-one correspondence, and the fixing rod (21) sequentially comprises the clamping blocks (22), the release blocks (23), the clamping blocks (22) and the release blocks (23) along the direction away from the bottom of the positioning groove (17).

8. An injection molding machine frame welding apparatus as defined in claim 6, wherein: the sliding block (103) is provided with an elastic piece (16), and the elastic piece (16) is positioned at one end of the sliding block (103) provided with a positioning groove (17).

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