Quick die changing cart

Abstract

The utility model relates to a quick die changing cart which comprises a cart body, a cart positioning mechanism and a positioning groove plate matched with the cart positioning mechanism for positioning, the positioning groove plate is provided with a positioning clamping groove, and a plurality of first rolling wheels and second rolling wheels are arranged on the cart body. The cart positioning mechanism comprises a driving shaft, a bottom plate, a front fixing plate, a rear fixing plate, a locking block, a locking block limiting plate and two auxiliary rods, a groove matched with the locking block is formed in the bottom plate, a locking block clamping groove is formed in the locking block limiting plate, and the locking block is located in the locking block clamping groove of the locking block limiting plate without external force. At the moment, the cart positioning mechanism and the positioning groove plate are in a non-buckled state; when the cart positioning mechanism and the positioning groove plate are in a buckled state, the clamping block is located in the positioning clamping groove, and the locking block is located outside the locking block clamping groove of the locking block limiting plate and clamped in the groove of the bottom plate. The cart is reasonable in structural design and easy to operate, and when the cart is adopted for die changing operation, the die changing time can be shortened, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The utility model relates to a mold-changing auxiliary tool, in particular to a fast mold-changing trolley. Background Art

[0002] In manufacturing plants, many processes require the use of molds. For example, in the production process of punching and welding automobile bumpers, most companies use robots and positioning and fixing molds to weld bumpers. To produce products of different specifications and models, it is necessary to replace different mold cores on the base of the mold so that the bumper can be better fixed and positioned. The size of the bumper is large, and the mold core used to fix the bumper is characterized by large size and heavy weight. At present, the common practice is to use hammocks and manual assistance to change molds. This method of mold changing has the problem of high labor intensity for workers and long mold changing time. Therefore, it is necessary to develop an auxiliary tool that is convenient for mold changing to solve the above problems. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a rapid mold change trolley with reasonable structural design and easy operation. The rapid mold change trolley is used for mold change operation, which can shorten the mold change time and reduce the labor intensity of workers.

[0004] The technical solution to solve the above technical problems is: a quick mold change trolley, comprising a trolley body, a trolley positioning mechanism and a positioning slot plate that cooperates with the trolley positioning mechanism for positioning, the positioning slot plate is provided with a positioning slot, and walking wheels are installed at the lower end of the trolley body, and multiple rollers 1 for contacting the side surfaces of the mold core are provided on both sides of the trolley body, and multiple rollers 2 for contacting the bottom end surface of the mold core are also provided on the trolley body. The trolley positioning mechanism comprises a driving shaft, a bottom plate, a front fixed plate, a rear fixed plate, a locking block, a locking block limiting plate and two auxiliary rods, the front fixed plate and the rear fixed plate are fixedly connected to the bottom plate, the locking block limiting plate is located between the front fixed plate and the rear fixed plate, the locking block limiting plate is located above the bottom plate and has a gap between the bottom plate, the two auxiliary rods are located on both sides of the driving shaft, and the driving shaft and the two auxiliary rods all pass through the front fixed plate, the locking block limiting plate The locking block is located above the groove of the bottom plate; when there is no external force, the locking block is located in the locking block groove of the locking block limiting plate. At this time, the trolley positioning mechanism and the positioning groove plate are in a non-engaged state; when the trolley positioning mechanism and the positioning groove plate are in the engaged state, the block is located in the positioning groove, and the locking block is located outside the locking block groove of the locking block limiting plate and is partially stuck in the groove of the bottom plate.

[0005] Furthermore, the cart body includes a symmetrical structure of body one and body two, wherein body one and body two are frame structures consisting of an outer rod, a middle rod, an inner rod, a front rod and a rear rod, the roller one is evenly installed on the outer rod, the roller two is evenly installed on the middle rod, body one and body two are connected by the front rod, the cart positioning mechanism is arranged between the outer rod and the middle rod, the bottom plate is installed on the front rod, and the drive shaft passes through the rear rod.

[0006] Furthermore, a baffle is provided on the driving shaft. When the trolley positioning mechanism and the positioning slot plate are in an unfastened state, the highest point of the baffle is 10-100mm higher than the second roller. When the trolley positioning mechanism and the positioning slot plate are in an engaged state, the highest point of the baffle is lower than the height of the second roller.

[0007] Furthermore, a connecting rod is connected between the middle side rods of the vehicle body 1 and the vehicle body 2, and a roller 2 is arranged on the connecting rod.

[0008] Furthermore, a handrail frame is provided on the rear rod through a connecting frame for pushing the cart, and a handle is provided at the end of the drive shaft located outside the rear rod for rotating the drive shaft.

[0009] Furthermore, an anti-collision top rod 1 for preventing the mold core from colliding with the rear side component is installed on the rear side rod through the rear side plate, and an anti-collision top rod 2 for preventing the cart from colliding with the front side component is arranged on the front side rod.

[0010] Furthermore, the quick mold change cart also includes a positioning wheel and a guide block for guiding the sliding path of the positioning wheel, and the positioning wheel is installed at the front end of the cart body.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] 1. After the quick mold change cart is positioned with the positioning slot plate installed on the mold base through the cart positioning mechanism, the mold core located on the mold base is manually pushed onto the cart body, and the mold core is transported to the designated location and unloaded through the quick mold change cart, and then the mold to be replaced is moved to the quick mold change cart and transported to the mold base for replacement. With the quick mold change cart, the hammock can be omitted during the mold change process, the mold change time is short, and the mold change is more convenient and quick. In addition, two sets of rollers are provided on the cart body, which can facilitate the movement of the mold core on the cart body and reduce the labor intensity of workers.

[0013] 2. The quick mold change cart is easy to operate, saving time and effort. When changing molds, you only need to align the cart positioning mechanism with the positioning slot plate, push the quick mold change cart to the appropriate position, and then rotate the drive shaft to clamp the cart positioning mechanism and the positioning slot plate. Since two sets of rollers are set on the cart body, the mold core has little movement resistance under the action of the rollers, and workers can push the mold core in and out very easily.

[0014] 3. The quick mold-changing trolley is provided with a locking block and a baffle. The locking block cooperates with the corresponding parts to conveniently lock the two states (engaged state and unengaged state) of the trolley positioning mechanism, which is convenient for mold changing and transportation operations; the baffle can prevent the mold core from falling off the trolley body, ensuring the transportation safety of the mold core. When the locking block is stuck in the locking block slot of the locking block limit plate, the trolley positioning mechanism can be kept in a state of not engaging with the positioning slot plate. This state will not change without external force. At this time, the baffle is in a protruding working state, which can prevent the mold core from falling off the trolley body during transportation. After the locking block is withdrawn from the locking block slot and rotated a certain angle, it can cooperate with the groove of the bottom plate. At this time, the baffle is in a non-working state below the trolley body, and the mold core can be pushed out of the trolley body above the baffle.

[0015] The technical features of a quick mold change trolley of the utility model will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1: A three-dimensional diagram of the quick mold-changing trolley of the present utility model (the trolley positioning mechanism and the positioning slot plate are engaged).

[0017] Figure 2 : Figure 1 Enlarged view of part A.

[0018] Figure 3 : A top view of the quick mold change cart of the utility model (the cart positioning mechanism and the positioning groove plate are engaged).

[0019] Figure 4 : Schematic diagram of the locking block limit plate structure of the utility model.

[0020] Figure 5 : A top view of the quick mold change cart of the present invention (the positioning slot plate is omitted, and the cart positioning mechanism is not engaged with the positioning slot plate).

[0021] Figure 6 : A three-dimensional diagram of the quick mold-changing cart of the present invention (the positioning slot plate is omitted, and the cart positioning mechanism is not engaged with the positioning slot plate).

[0022] Figure 7 : Figure 6 Enlarged view of part B.

[0023] In the figure: 1-trolley body, 101-outer rod, 102-middle rod, 103-inner rod, 104-front rod, 105-rear rod, 106-connecting rod.

[0024] 2-Roller 2, 3-Roller 1.

[0025] 4-trolley positioning mechanism, 41-driving shaft, 42-front fixing plate, 43-bottom plate, 431-groove, 44-rear fixing plate, 45-auxiliary rod, 46-block, 47-locking block, 48-locking block limiting plate, 481-locking block slot, 49-spring.

[0026] 5-positioning slot plate, 51-positioning slot, 6-anti-collision top rod 2, 7-guide block, 8-positioning wheel, 9-baffle, 10-handle, 11-anti-collision top rod 1, 12-connecting frame, 13-handrail frame, 14-travel wheel, 15-rear side plate.

[0027] P-Mold base. DETAILED DESCRIPTION Embodiment 1:

[0028] A quick mold change cart, such as Figure 1-Figure 6As shown, it includes a trolley body 1, a trolley positioning mechanism 4 and a positioning slot plate 5 that cooperates with the trolley positioning mechanism for positioning, the positioning slot plate 5 is provided with a positioning slot 51, and the positioning slot plate 5 is fixed on the mold base P. The lower end of the trolley body 1 is equipped with a walking wheel 14, and the two sides of the trolley body are provided with a plurality of rollers 1 3 for contacting the side surface of the mold core, and the trolley body is also provided with a plurality of rollers 2 2 for contacting the bottom end surface of the mold core.

[0029] The front end of the positioning groove plate 5 is defined as the front end, and the other end is defined as the rear end. The cart positioning mechanism 4 includes a drive shaft 41, a bottom plate 43, a front fixing plate 42, a rear fixing plate 44, a locking block 47, a locking block limit plate 48 and two auxiliary rods 45. The front fixing plate 42 and the rear fixing plate 44 are fixedly connected to the bottom plate 43. The locking block limit plate 48 is located between the front fixing plate and the rear fixing plate. The locking block limit plate 48 is located above the bottom plate 43 and there is a gap between the bottom plate. The locking block limit plate 48 can move on the bottom plate 43. The two auxiliary rods 45 are located on both sides of the drive shaft 41. The front fixing plate 42 and the rear fixing plate 44 are fixedly connected to the bottom plate 43. The locking block limit plate 48 is located between the front fixing plate and the rear fixing plate. The locking block limit plate 48 is located above the bottom plate 43 and there is a gap between the bottom plate. The locking block limit plate 48 can move on the bottom plate 43. The two auxiliary rods 45 are located on both sides of the drive shaft 41. The ends and two auxiliary rods all pass through the front fixing plate 42, the locking block limit plate 48 and the rear fixing plate 44. There is a gap between the drive shaft 41 and the front fixing plate 42, the rear fixing plate 44 and the locking block limit plate 48. When the drive shaft 41 rotates, the front fixing plate 42, the rear fixing plate 44 and the locking block limit plate 48 do not rotate with it. The auxiliary rod 45 is fixedly connected with the locking block limit plate 48. There is a gap between the auxiliary rod 45 and the front fixing plate 42 and the rear fixing plate 44. When the auxiliary rod 45 moves, the front fixing plate 42 and the rear fixing plate 44 do not move with it. A spring 49 is installed on the auxiliary rod 45 between the rear fixing plate 44 and the locking block limit plate 48. The two ends of the spring 49 are respectively connected to the rear fixing plate 44 and the locking block limit plate 48. A block 46 that is fastened with the positioning slot 51 is provided on the front end of the drive shaft 41. The block is semicircular. The distance between the front end of the auxiliary rod 45 and the positioning slot plate 5 is smaller than the distance between the front end of the driving shaft 41 and the positioning slot plate 5. The locking block 47 is fixedly mounted on the driving shaft 41 and is located between the locking block limit plate 48 and the front fixing plate 42. The locking block 47 and the clamping block 46 rotate synchronously with the driving shaft 41. The bottom plate 43 is provided with a groove 431 that cooperates with the locking block, the locking block limit plate 48 is provided with a locking block clamping groove 481, the locking block 47 is located above the groove 431 on the bottom plate, and the locking block limit plate 48 is located above the groove 431 on the bottom plate.

[0030] When there is no external force, the locking block 47 is located in the locking block slot 481 of the locking block limit plate 48. At this time, since the locking block 47 is embedded in the locking block slot 481 and is constrained, the driving shaft cannot rotate arbitrarily, and the position of the driving shaft 41 can be fixed. At this time, the block 46 is located outside the positioning slot 51, and the trolley positioning mechanism 4 and the positioning slot plate 5 are in a non-engaged state; when the trolley positioning mechanism 4 and the positioning slot plate 5 are in an engaged state, the block 46 is located in the positioning slot 51, and the locking block 47 is located outside the locking block slot 481 of the locking block limit plate 48, and the rotation of the driving shaft 41 drives part of the locking block 47 to be locked in the groove 431 of the bottom plate.

[0031] In this embodiment, the cart body 1 includes a symmetrically arranged and mutually connected car body 1 and car body 2, the car body 1 and car body 2 are frame structures composed of an outer rod 101, a middle rod 102, an inner rod 103, a front rod 104 and a rear rod 105, the rollers 1 3 are evenly installed on the outer rod 101, the rollers 2 2 are evenly installed on the middle rod 102, the cart positioning mechanism 4 is arranged between the outer rod 101 and the middle rod 102, the bottom plate 43 is installed on the front rod 104, and the rear end of the drive shaft 41 passes through the rear rod 105. The front rods 104 of the car body 1 and the car body 2 are integral, and the car body 1 and the car body 2 are connected through the front rod. A connecting rod 106 is connected between the middle rods 102 of the car body 1 and the car body 2, and the connecting rod is provided with rollers 2 2.

[0032] In this embodiment, the drive shaft 41 is further provided with a baffle 9. When the locking block 47 is located in the locking block slot 481 of the locking block limit plate, the highest point of the baffle 9 is 30-70 mm higher than the roller 2. Preferably, the baffle is arranged vertically, that is, the baffle 9 is in a vertical working state (such as Figure 6-Figure 7 As shown in the figure, it can prevent the mold core placed on the cart body 1 from falling. When the drive shaft 41 rotates 90°, the highest point of the baffle plate 9 is lower than the highest point of the roller 2, preferably the highest point of the baffle plate 9 is lower than the upper end surface of the outer rod 101 and the middle rod 102, and the baffle plate is preferably arranged horizontally, that is, the baffle plate 9 is in a horizontal non-working state (as shown in the figure). Figure 1 , Figure 2 As shown), there is no baffle to block the mold core, and the mold core can be pushed out of the cart body 1. As a change, when it can be ensured that the mold core will not fall during transportation, the baffle may not be set.

[0033] In this embodiment, the rear side rod 105 is also provided with a handrail frame 13 for trolleys through the connecting frame 12, which is used to push the entire rapid mold change trolley to move. The rear end of the drive shaft 41 located outside the rear side rod 105 is also provided with a handle 10 for facilitating the rotation of the drive shaft, and the handle 10 drives the drive shaft 41 to rotate. The rear side rod 105 is provided with an anti-collision top rod 11 for preventing the mold core from colliding with the rear side component through the rear side plate 15, and the front side rod is provided with an anti-collision top rod 2 6 for preventing the trolley from colliding with the front side component. The front ends of the anti-collision top rod 11 and the anti-collision top rod 2 6 are made of flexible materials. The rapid mold change trolley also includes a positioning wheel 8 and a guide block 7 for guiding the sliding path of the positioning wheel, and the positioning wheel 8 is installed at the front end of the trolley body. The guide block 7 is installed at a qualified position of the mold base P, so that the positioning wheel 8 drives the trolley body 1 to move to a suitable position under the action of the guide block.

[0034] Working process: Figure 5-Figure 7 As shown, at this time, the spring 49 is in a natural state, and the locking block 47 is located in the locking block slot 481 of the locking block limit plate 48. At this time, since the locking block 47 is embedded in the locking block slot 481 and is constrained, the position of the drive shaft 41 can be limited and fixed, and it will not rotate. The baffle 9 is in a vertical working state, which plays a role in preventing the mold core from falling on the cart body 1. The semicircular block 46 is located in the upper half of the drive shaft 41. This state is the state in which the cart positioning mechanism 4 is not engaged with the positioning slot plate 51, which is suitable for transporting mold cores.

[0035] When the mold needs to be changed, the utility model is pushed to a suitable position so that the block 46 on the drive shaft is aligned with the positioning slot 51, and then the utility model is pushed to continue to approach the positioning slot plate 5 until the auxiliary rod 45 touches the end surface of the positioning slot plate 5. At this time, the block 46 has not reached the upper position of the positioning slot 51. The utility model is continued to be pushed to make the block 46 reach the upper position of the positioning slot 51. The auxiliary rod 45 is squeezed by the positioning slot plate 5 to drive the locking block limit plate 48 to move backward, so that the locking block 47 is out of the locking block slot 481 and is located in the locking The locking block 47 is outside the locking block slot 481. At this time, the spring 49 is in a compressed state. Since the locking block slot 481 has lost its constraint on the locking block 47, the drive shaft can rotate. At this time, the drive shaft 41 is rotated about 90 degrees. The drive shaft 41 drives the block 46 to rotate so that the block is transferred into the positioning slot 51 and is clamped. The locking block 47 rotates synchronously with the drive shaft 41 so that the lower part of the locking block 47 is transferred into the groove 431 of the bottom plate and is clamped. After the locking block rotates, it blocks the locking block limit plate 48 and blocks the locking block limit plate 48 from moving forward under the action of the spring. At this time, the cart positioning mechanism and the positioning slot plate are in a buckled state, as shown in FIG. Figure 1-Figure 3In this state, the mold core can be pushed down the trolley body 1 to perform mold change. After the mold change is completed, the driving shaft 41 is rotated to drive the clamping block 46 and the locking block 47 to rotate and reset, and the clamping block 46 rotates out of the positioning slot 51 and is located above the positioning slot. Under the action of the spring, the locking block limit plate 48 moves forward to allow the locking block 47 to enter the locking block slot 481 again and be constrained, and reset to the unfastened state.

Claims

1. A quick mold change cart, characterized in that: The invention comprises a trolley body (1), a trolley positioning mechanism (4) and a positioning slot plate (5) which cooperates with the trolley positioning mechanism for positioning, wherein the positioning slot plate (5) is provided with a positioning slot (51), a walking wheel (14) is installed at the lower end of the trolley body, a plurality of rollers (3) for contacting the side surface of the mold core are provided on both sides of the trolley body, and a plurality of rollers (2) for contacting the bottom end surface of the mold core are also provided on the trolley body, the trolley positioning mechanism (4) comprises a driving shaft (41), a bottom plate (43), a front fixing plate (42), a rear fixing plate (44), a locking block (47), a locking block limiting plate (48) and two auxiliary rods (45), wherein the front fixing plate and the rear fixing plate are fixedly connected to the bottom plate, the locking block limiting plate is located between the front fixing plate and the rear fixing plate, the locking block limiting plate is located above the bottom plate and has a gap with the bottom plate, and the two auxiliary rods are located on both sides of the driving shaft, and the driving shaft and the two auxiliary rods all pass through the front fixing plate, the locking block limiting plate and the rear fixing plate. The drive shaft has gaps with the front fixing plate, the rear fixing plate and the locking block limit plate, the auxiliary rod is fixedly connected with the locking block limit plate, the auxiliary rod has gaps with the front fixing plate and the rear fixing plate, a spring (49) is installed on the auxiliary rod between the rear fixing plate and the locking block limit plate, a block (46) matching with the positioning slot is arranged on the front end of the drive shaft, the locking block is fixedly installed on the drive shaft, a groove (431) matching with the locking block is opened on the bottom plate, and the locking block limit plate A locking block slot (481) is provided on the positioning plate, and the locking block is located above the groove (431) on the bottom plate; when no external force is applied, the locking block is located in the locking block slot of the locking block limiting plate, and the trolley positioning mechanism (4) and the positioning groove plate (5) are in a non-engaged state; when the trolley positioning mechanism (4) and the positioning groove plate (5) are in an engaged state, the block (46) is located in the positioning slot, and the locking block is located outside the locking block slot of the locking block limiting plate and is partially engaged in the groove (431) of the bottom plate.

2. The rapid mold change trolley according to claim 1, characterized in that: The cart body comprises a symmetrically structured body 1 and body 2, wherein the body 1 and body 2 are frame structures formed by an outer rod (101), a middle rod (102), an inner rod (103), a front rod (104) and a rear rod (105), the first roller (3) being evenly mounted on the outer rod (101), the second roller (2) being evenly mounted on the middle rod (102), the body 1 and body 2 being connected via the front rod, the cart positioning mechanism (4) being arranged between the outer rod and the middle rod, the bottom plate (43) being mounted on the front rod, and the drive shaft passing through the rear rod.

3. The rapid mold change trolley according to claim 1, characterized in that: The drive shaft is also provided with a baffle plate (9); when the trolley positioning mechanism (4) and the positioning slot plate (5) are in a non-engaged state, the highest point of the baffle plate is 10-100 mm higher than the second roller; when the trolley positioning mechanism (4) and the positioning slot plate (5) are in an engaged state, the highest point of the baffle plate is lower than the height of the second roller.

4. The rapid mold change trolley according to claim 2 or 3, characterized in that: A connecting rod (106) is connected between the middle side rods (102) of the vehicle body 1 and the vehicle body 2, and a second roller (2) is arranged on the connecting rod.

5. The rapid mold change trolley according to claim 2, characterized in that: The rear rod (105) is also provided with a handrail frame (13) for facilitating pushing the cart via a connecting frame (12), and a handle (10) for facilitating rotating the drive shaft is also provided at the end of the drive shaft located outside the rear rod.

6. The rapid mold change cart according to claim 2, characterized in that: The rear side rod (105) is provided with an anti-collision top rod (11) for preventing the mold core from colliding with the rear side component via the rear side plate (15), and the front side rod is provided with an anti-collision top rod (6) for preventing the cart from colliding with the front side component.

7. The rapid mold change trolley according to claim 1 or 2, characterized in that: The rapid mold change trolley also includes a positioning wheel (8) and a guide block (7) for guiding the sliding path of the positioning wheel, wherein the positioning wheel is mounted on the front end of the trolley body.

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