Positioning and discharging mechanism of automatic spot welding machine

Abstract

The utility model relates to the technical field of vamp cloth production, in particular to a positioning and discharging mechanism of an automatic spot welding machine. Comprising a base plate, and a positioning groove is formed in the middle of the base plate. When the pushing block is pushed towards the direction of the sleeve, the pushing block drives the sliding rod and the rack to move synchronously, the spring is pressed to store energy, through meshing transmission of the rack and the gears, the two gears synchronously drive the rotating shafts corresponding to the gears to rotate, the rotating shafts drive the rotating plates to rotate, and the two rotating plates jointly push the bottom plate to vertically move upwards. When the upper surface of the bottom plate moves to the position higher than the surface of the base plate, one end of the locking frame is inserted into the locking groove, the locking frame is matched with the locking groove to prevent the spring from rebounding to push the push block and the rack to reset, so that the position of the rack is fixed, the bottom plate is locked at the current height, and at the moment, the mold frame is ejected out by the bottom plate to the position above the positioning groove. And meanwhile, impurities on the upper side wall of the bottom plate can be conveniently cleaned in a wiping mode, and normal use of the replaced mold frame is ensured.

Description

Technical Field

[0001] This utility model relates to the field of shoe upper fabric production technology, specifically to an automatic spot welding machine positioning and feeding mechanism. Background Technology

[0002] Shoes are a necessity in people's lives and an important tool for protecting the safety of their feet. The production process of shoe upper fabric includes ultrasonic welding of the shoe upper fabric. When using an automated ultrasonic welding machine to weld the shoe upper fabric, the operator needs to place the shoe upper fabric at a predetermined position on the operating platform of the ultrasonic welding machine so that the welding gun of the spot welding machine can perform precise spot welding at the predetermined position on the shoe upper fabric.

[0003] In the prior art, the placement of shoe upper fabric is usually determined by the following method: an embedded groove is opened on the operating table, a mold frame is placed in the groove, and the mold frame has a groove that matches the shape of the shoe upper fabric. The operator only needs to put the fabric into the groove according to the shape to achieve its precise positioning on the operating table. The mold frame is available in various models with different groove sizes to accommodate shoe upper fabrics of different sizes.

[0004] When welding fabrics of different sizes, the corresponding mold frame must be replaced. The replacement process is as follows: first, remove the original mold frame from the embedded slot, and then insert the mold frame of the required size. During the replacement process, special attention must be paid to the cleanliness of the workbench surface. If there are large particles or impurities on the workbench, the frame will not be able to remain level after the mold frame is placed, resulting in a gap between its lower surface and the base plate. If the upper fabric is placed in this situation, the edge of the fabric is very likely to slip into this gap, causing misalignment. Therefore, if impurities are found on the base plate, the operator must remove them in time.

[0005] However, the upper surface of the base plate is located inside the embedded groove, making it difficult for operators to directly wipe away large particles of impurities on the base plate inside the groove. Usually, a handheld vacuum cleaner is needed to remove them, which is inconvenient. At the same time, due to the small gap between the mold frame and the inner wall of the embedded groove, it is difficult for operators to remove the mold frame from the embedded groove in order to ensure that the position of the mold frame does not shift inside the groove. Replacing the mold frame is also quite difficult. Utility Model Content

[0006] The purpose of this utility model is to provide an automatic spot welding machine positioning and feeding mechanism to solve the problems mentioned in the background art above:

[0007] The upper surface of the base plate is located inside the recessed groove, making it difficult for operators to directly wipe away large particles of impurities on the base plate inside the groove. Usually, a handheld vacuum cleaner is needed to remove them, which is quite inconvenient.

[0008] To address the above problems, the present invention aims to provide an automatic spot welding machine positioning and feeding mechanism, comprising a base plate, a positioning groove formed in the middle of the base plate, a mold frame and a base plate slidably disposed inside the positioning groove, the mold frame being placed on the upper side wall of the base plate, and a height adjustment mechanism for adjusting the height of the base plate being provided on the base plate, the height adjustment mechanism comprising two rotating shafts respectively horizontally rotatably disposed inside the positioning groove near the sides, rotating plates being fixed on the rotating shafts, the side walls of the rotating plates contacting the lower side wall of the base plate, and a drive mechanism for driving the two rotating shafts to rotate synchronously, when the drive mechanism drives the two rotating shafts to rotate synchronously, the rotating shafts drive the corresponding rotating plates to rotate synchronously, so that the two rotating plates jointly push the base plate to move vertically upward until the upper surface of the base plate moves to a position higher than the upper surface of the base plate.

[0009] As a further improvement to this technical solution, a mounting groove is provided on the substrate, one end of the rotating shaft rotates through one side of the positioning groove and extends into the interior of the mounting groove, and the driving mechanism includes gears coaxially fixed on the rotating shaft and located inside the mounting groove, with the same rack meshing above the two gears.

[0010] As a further improvement to this technical solution, the inner wall of the mounting groove is symmetrically and horizontally fixed with two slide rails, and the two sides of the rack are respectively slidably arranged inside the two slide rails.

[0011] As a further improvement to this technical solution, the driving mechanism further includes a push block fixedly disposed at one end of the upper side wall of the rack. A slide rod is horizontally fixed on one side of the push block, and a sleeve is slidably sleeved on the slide rod. The end of the sleeve away from the push block is fixedly disposed on the inner wall of the mounting groove. A spring is disposed between the slide rod and the inner wall of the mounting groove, located inside the sleeve. The spring pushes the push block away from the sleeve.

[0012] As a further improvement to this technical solution, the driving mechanism also includes a locking frame hinged to the upper side wall of the push block. The upper side wall of the substrate is provided with a locking groove. When the upper surface of the base plate moves to a position higher than the upper surface of the substrate, one end of the locking frame is inserted into the locking groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The positioning and feeding mechanism of this automatic spot welding machine, when pushing the push block towards the sleeve, causes the push block to drive the slide rod and rack to move synchronously, so that the spring is compressed and stores energy. Through the meshing transmission of the rack and gear, the two gears synchronously drive their respective rotating shafts and rotating plates to rotate. The two rotating plates together push the base plate to move vertically upward. When the upper surface of the base plate moves to a position higher than the surface of the base plate, one end of the locking frame is inserted into the locking groove. The locking frame and the locking groove cooperate to prevent the spring from rebounding and pushing the push block and rack to reset, thereby fixing the rack position and locking the base plate at the current height. At this time, the mold frame is pushed out by the base plate to the top of the positioning groove, which is convenient for the operator to replace the mold frame. It is also convenient to clean the impurities on the side wall of the base plate by wiping, ensuring the normal use of the mold frame after replacement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is one of the cross-sectional views of the overall structure of this utility model;

[0018] Figure 4 This is a second sectional view of the overall structure of this utility model;

[0019] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A in the middle;

[0020] Figure 6 This is a partial structural schematic diagram of the present invention;

[0021] Figure 7 This is a schematic diagram of the overall device and spot welding machine of this utility model after assembly.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Substrate; 11. Positioning groove; 12. Mounting groove; 13. Locking groove;

[0024] 2. Mold frame; 3. Base plate;

[0025] 4. Height adjustment mechanism; 41. Rotating shaft; 42. Rotating plate; 43. Gear; 44. Rack; 45. Slide rail; 46. Push block; 461. Locking frame; 47. Slide rod; 48. Sleeve; 49. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figure 1 As shown, the purpose of this embodiment is to provide an automatic spot welding machine positioning and feeding mechanism, including a substrate 1, as shown in the figure. Figure 7 The substrate 1 is placed horizontally on the processing table of the spot welding machine, and the substrate 1 is fixed to the robotic arm of the spot welding machine. The spot welding machine can adjust the position of the substrate 1 horizontally through the robotic arm. The substrate 1 is the operating table of the spot welding machine. A positioning groove 11 is provided in the middle of the substrate 1. The positioning groove 11 passes through the upper and lower side walls of the substrate 1. A mold frame 2 and a base plate 3 are slidably arranged inside the positioning groove 11. The mold frame 2 and the base plate 3 slide up and down inside the positioning groove 11. The mold frame 2 is placed on the upper side wall of the base plate 3, and a groove adapted to the shape of the shoe upper fabric is provided on the mold frame 2. During operation, the shoe upper fabric is placed inside the groove of the mold frame 2 and the shoe upper fabric is made to contact the upper side wall of the base plate 3 to position the shoe upper fabric. This allows the welding gun of the spot welding machine to perform precise spot welding at the predetermined position on the shoe upper fabric.

[0029] The mold frame 2 comes in various models, each with a different groove size to accommodate different sizes of shoe upper fabric. When changing to a different model of mold frame 2, simply remove the mold frame 2 from the positioning groove 11 and replace it with the desired model. When changing the mold frame 2, care must be taken to avoid large particles on the base plate 3. If large particles are present on the base plate 3, the mold frame 2 will not remain level after being placed on the upper side wall of the base plate 3, resulting in a gap between the lower side wall of the mold frame 2 and the upper side wall of the base plate 3. If the shoe upper fabric is placed into the groove of the mold frame 2, the edge of the fabric may slip into this gap, causing the fabric to be mispositioned. Therefore, if any impurities are found on the base plate 3, the operator must remove them promptly.

[0030] However, when the upper sidewall of the base plate 3 is inside the positioning groove 11, the operator cannot remove large particles of impurities from the upper sidewall of the base plate 3 inside the positioning groove 11 by wiping. A handheld vacuum cleaner is required to remove them, which is inconvenient.

[0031] To facilitate the replacement of mold frame 2 and the cleaning of large particles on the upper surface of base plate 3, a height adjustment mechanism 4 is provided on base plate 1 for adjusting the height of base plate 3. When mold frame 2 needs to be replaced, the height adjustment mechanism 4 drives mold frame 2 to move vertically upward until the upper surface of base plate 3 moves to a position higher than the upper surface of base plate 1. The moving base plate 3 pushes mold frame 2 out of the positioning groove 11, making it convenient for the operator to replace mold frame 2. At the same time, after the upper side wall of base plate 3 is higher than base plate 1, the operator can easily wipe and remove large particles on the upper surface of base plate 3 in the positioning groove 11.

[0032] The following details the structure of the height adjustment mechanism 4, referring to... Figure 2 and Figure 3 The height adjustment mechanism 4 includes two horizontally rotatable shafts 41 positioned near the sides inside the positioning groove 11. A rotating plate 42 is fixed to each shaft 41. The sidewall of the rotating plate 42 contacts the lower sidewall of the base plate 3. The rotating plate 42 is an eccentrically mounted teardrop-shaped structure relative to the shafts 41. (Note: The last sentence appears to be incomplete and possibly refers to a different mechanism.) Figures 4-6 A drive mechanism is provided on the substrate 1 to drive two rotating shafts 41 to rotate synchronously. When the drive mechanism drives the two rotating shafts 41 to rotate synchronously, the rotating shafts 41 drive the corresponding rotating plates 42 to rotate synchronously. During the rotation, the end of the rotating plate 42 away from the axis of the rotating shaft 41 gradually rotates upward and contacts the lower side wall of the base plate 3. As the rotating plate 42 continues to rotate, the two rotating plates 42 jointly push the base plate 3 to move vertically upward until the upper surface of the base plate 3 moves to a position higher than the upper surface of the substrate 1. The rotating shafts 41 and rotating plates 42 are available in various models, and the dimensions of the rotating shafts 41 and rotating plates 42 of different models are different, which can be installed as needed.

[0033] A mounting groove 12 is provided on the substrate 1. One end of the rotating shaft 41 rotates through one side of the positioning groove 11 and extends into the mounting groove 12. The structure of the drive mechanism is detailed below. The drive mechanism includes gears 43 coaxially fixed on the rotating shaft 41 and located inside the mounting groove 12. The same rack 44 is meshed above the two gears 43. Two slide rails 45 are symmetrically and horizontally fixed on the inner wall of the mounting groove 12. The two sides of the rack 44 are slidably disposed inside the two slide rails 45 respectively. The two slide rails 45 constrain the rack 44 to move only horizontally, thereby ensuring stable meshing between the rack 44 and the gears 43.

[0034] The drive mechanism also includes a push block 46 fixedly mounted on one end of the upper side wall of the rack 44. A slide rod 47 is horizontally fixed on one side of the push block 46. A sleeve 48 is slidably sleeved on the slide rod 47. The end of the sleeve 48 away from the push block 46 is fixedly mounted on the inner wall of the mounting groove 12. A spring 49 is located inside the sleeve 48 between the slide rod 47 and the inner wall of the mounting groove 12. The spring 49 pushes the push block 46 away from the sleeve 48. When the rack 44 is in the initial state, the end of the rack 44 away from the spring 49 contacts the inner wall of the mounting groove 12, thereby stabilizing the rack 44 in the initial position. Then, through the meshing between the rack 44 and the gear 43, the gear 43, the rotating shaft 41 and the rotating plate 42 are kept stable. At this time, the base plate 3 and the mold frame 2 are both located inside the positioning groove 11. The positioning groove 11 constrains the horizontal movement of the mold frame 2, thereby realizing the positioning function of the mold frame 2 on the shoe upper fabric.

[0035] The drive mechanism also includes a locking frame 461 hinged to the upper side wall of the push block 46. The locking frame 461 has an n-shaped structure, with its other end resting on the upper side wall of the base plate 1. A locking groove 13 is provided on the upper side wall of the base plate 1. When the operator pushes the push block 46 towards the sleeve 48, the push block 46 drives the slide rod 47 and the rack 44 to move synchronously, reducing the distance between the slide rod 47 and the inner wall of the mounting groove 12. The spring 49 is compressed and stores energy. Through the meshing transmission of the rack 44 and the gear 43, the two gears 43 drive the corresponding rotating shaft 41 to rotate synchronously. The rotating shaft 41 drives the corresponding rotating plate 42 to rotate, which can push the base plate 3 to move vertically upward through the two rotating plates 42.

[0036] When the upper surface of the base plate 3 moves to a position higher than the upper surface of the base plate 1, the end of the locking frame 461 away from the push block 46 moves directly above the locking groove 13. At this time, the locking frame 461 rotates around its connection with the push block 46 under the action of gravity, so that one end of the locking frame 461 is inserted into the interior of the locking groove 13. After the operator releases the push block 46, the locking frame 461 contacts the side of the locking groove 13 near the push block 46. The pressure generated by the contact surface prevents the spring 49 from rebounding and pushing the push block 46 and the rack 44 back to the initial position, thereby fixing the position of the rack 44 and fixing the base plate 3 at the current height, which makes it convenient for the operator to change the mold frame 2 and wipe and clean large particulate impurities on the upper surface of the base plate 3.

[0037] When using this device, if it is necessary to replace the mold frame 2, the operator pushes the push block 46 towards the sleeve 48. The push block 46 drives the slide rod 47 and the rack 44 to move synchronously, causing the spring 49 to be compressed and stored. Through the meshing transmission of the rack 44 and the gear 43, the two gears 43 drive the corresponding rotating shaft 41 to rotate synchronously. The rotating shaft 41 drives the corresponding rotating plate 42 to rotate, and the two rotating plates 42 push the base plate 3 to move vertically upward. When the upper surface of the base plate 3 moves to a position higher than the upper surface of the base plate 1, one end of the locking frame 461 is inserted into the locking groove 13. After the operator releases the push block 46, the locking frame 461 cooperates with the locking groove 13 to prevent the spring 49 from rebounding and pushing the push block 46 and the rack 44 back to the initial position. The position of the rack 44 is fixed in this way, and the base plate 3 is fixed at the current height. The operator removes the mold frame 2 that is pushed out of the positioning groove 11 by the base plate 3. After cleaning the impurities on the upper side wall of the base plate 3 by wiping, the mold frame 2 of the required model is stacked on the upper side wall of the base plate 3. Then, the end of the locking frame 461 is rotated out from the inside of the locking groove 13, so that the spring 49 can rebound and push the slide rod 47 and the rack 44 back to the initial position. During the reset process, the rack 44 drives the gear 43, the rotating shaft 41 and the rotating plate 42 to rotate synchronously and reset, so that the base plate 3 and the mold frame 2 move into the inside of the positioning groove 11 under the action of gravity. The positioning groove 11 constrains the horizontal movement of the mold frame 2, realizing the positioning function of the mold frame 2 for the shoe upper fabric.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic spot welding machine positioning and feeding mechanism, comprising a substrate (1), characterized in that: A positioning groove (11) is provided in the middle of the substrate (1). A mold frame (2) and a base plate (3) are slidably arranged inside the positioning groove (11). The mold frame (2) is placed on the upper side wall of the base plate (3). A height adjustment mechanism (4) for adjusting the height of the base plate (3) is provided on the substrate (1). The height adjustment mechanism (4) includes two rotating shafts (41) that are respectively horizontally rotatably arranged inside the positioning groove (11) near the two sides. A rotating plate (42) is fixed on the rotating shaft (41). The side wall of the rotating plate (42) is in contact with the lower side wall of the base plate (3). A drive mechanism for driving the two rotating shafts (41) to rotate synchronously is provided on the substrate (1). When the drive mechanism drives the two rotating shafts (41) to rotate synchronously, the rotating shafts (41) drive the corresponding rotating plates (42) to rotate synchronously, so that the two rotating plates (42) jointly push the base plate (3) to move vertically upward until the upper surface of the base plate (3) moves to a position higher than the upper surface of the substrate (1).

2. The automatic spot welding machine positioning and feeding mechanism according to claim 1, characterized in that: The substrate (1) has an installation groove (12). One end of the rotating shaft (41) rotates through one side of the positioning groove (11) and extends into the installation groove (12). The driving mechanism includes a gear (43) coaxially fixed on the rotating shaft (41) and located inside the installation groove (12). The two gears (43) are meshed with the same rack (44) above them.

3. The automatic spot welding machine positioning and feeding mechanism according to claim 2, characterized in that: The inner wall of the mounting groove (12) is symmetrically and horizontally fixed with two slide rails (45), and the two sides of the rack (44) are respectively slidably arranged inside the two slide rails (45).

4. The automatic spot welding machine positioning and feeding mechanism according to claim 2, characterized in that: The driving mechanism also includes a push block (46) fixedly disposed on one end of the upper side wall of the rack (44). A slide rod (47) is horizontally fixed on one side of the push block (46). A sleeve (48) is slidably sleeved on the slide rod (47). The end of the sleeve (48) away from the push block (46) is fixedly disposed on the inner wall of the mounting groove (12). A spring (49) located inside the sleeve (48) is disposed between the slide rod (47) and the inner wall of the mounting groove (12). The spring (49) pushes the push block (46) away from the sleeve (48).

5. The automatic spot welding machine positioning and feeding mechanism according to claim 4, characterized in that: The driving mechanism also includes a locking frame (461) hinged to the upper side wall of the push block (46). The upper side wall of the substrate (1) is provided with a locking groove (13). When the upper surface of the base plate (3) moves to a position higher than the upper surface of the substrate (1), one end of the locking frame (461) is inserted into the interior of the locking groove (13).

Images