Interprocess transfer equipment based on camshaft production

Abstract

The invention provides inter-process transfer equipment based on camshaft production, and particularly relates to the technical field of pressure control valves, the inter-process transfer equipment comprises a transfer frame and further comprises supporting plates, the symmetrically arranged supporting plates are arranged in the transfer frame, the top of each supporting plate is connected with a plurality of first guide rods, and the first guide rods are connected with symmetrically arranged first limiting blocks; the second guide rods are slidably connected to the first guide rods, the first limiting blocks are in extrusion fit with the second guide rods, and the first limiting blocks are used for limiting the second guide rods from moving out of the first guide rods. A push rod is manually pulled to move forwards, after the push rod is separated from a lifting rod, the lifting rod automatically moves upwards to push a connecting plate upwards, and the transfer protection frame can automatically move upwards and does not shield the cam shaft any more; and then the transfer support is driven to move forwards to pull the needed cam shaft forwards, and people can take out the cam shaft conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure control valves, and in particular to inter-process transfer equipment for camshaft production. Background Art

[0002] In the camshaft factory workshop, the camshaft can be transported in the workshop according to the requirements of the camshaft production process. The patent with patent publication number CN220315079U discloses a camshaft transfer vehicle, which is specially used for transporting camshafts, including a base, a first support plate, a second support plate and a camshaft limit plate, and the lower end face of the base is connected with a movable wheel through a fixed block; it is characterized in that: there are two first support plates, which are symmetrically arranged on the upper end face of the base, and a plurality of groups of first limit assemblies are arranged on opposite sides of the two first support plates from front to back; the second support plate is vertically arranged in the middle position of the upper end face of the base, and a plurality of groups of second limit assemblies are symmetrically arranged on the left and right sides of the second support plate.

[0003] The above-mentioned camshaft transfer cart is composed of layers of stacked camshaft limit plates. When placing the camshaft, the camshafts are first placed on the camshaft limit plates, and then the camshaft limit plates are placed on the bottom layer of the camshaft transfer cart. Then the second layer of camshaft limit plates are placed on the camshaft transfer cart. The camshafts are then stacked layer by layer. When taking out the camshaft, the camshaft limit plates need to be lifted onto the placement rack for use. Since seven camshafts are stored on each camshaft limit plate, it is very laborious for the staff to lift the camshaft limit plates. Therefore, a process-to-process transfer equipment based on camshaft production that can easily take the camshaft is now being developed. Summary of the invention

[0004] The present invention provides inter-process transfer equipment for camshaft production, which can conveniently take out the camshaft, and is used to overcome the disadvantage that the existing camshaft transfer vehicle is very laborious when taking out the camshaft.

[0005] The technical solution of the present invention is: based on the inter-process transfer equipment for camshaft production, it includes a transfer frame and a support plate. The symmetrically arranged support plates are arranged in the transfer frame. A plurality of first guide rods are connected to the top of the support plate. The first guide rods are connected to symmetrically arranged first limiting blocks. The first guide rods are slidably connected to the second guide rods. The first limiting blocks and the second guide rods are extruded and matched. The first limiting blocks are used to limit the second guide rods from moving out of the first guide rods. The second guide rods are fixedly connected to a symmetrically arranged second limiting block on one side close to the first limiting block. A transfer bracket is slidably connected to the second guide rod. The second limiting block is extruded and matched with the transfer bracket. The second limiting block is used to limit the transfer bracket from moving out of the second guide rod. A plurality of equally spaced guide rails are connected to the transfer frame. A transfer protection frame is slidably connected to the guide rails.

[0006] As a preferred technical solution of the present invention, it also includes a third guide rod, the third guide rod is connected to one side of the transfer bracket, a pushing rod is slidably connected to the third guide rod, a connecting plate is fixedly connected to the side of the transfer protection frame away from the third guide rod, a lifting rod is rotatably connected to the side of the transfer frame close to the connecting plate, the lifting rod and the connecting plate are squeezed together, the lifting rod and the pushing rod are squeezed together, and a torsion spring is connected between the lifting rod and the transfer frame.

[0007] As a preferred technical solution of the present invention, it also includes a fourth guide rod, which is fixedly connected to the side of the second guide rod, and a locking rod is slidably connected to the fourth guide rod. The locking rod is provided with an inclined surface, and the inclined surface of the locking rod is snap-fitted with the first limiting block. A wedge block is connected to the side of the transfer bracket close to the locking rod, and the wedge block and the locking rod are squeezed together. A square groove is provided on the side of the transfer bracket close to the wedge block, and the square groove and the locking rod are snap-fitted.

[0008] As a preferred technical solution of the present invention, it also includes a support frame, which is slidably connected to the transfer bracket, a wedge rod is provided on the side of the support frame, the wedge rod is squeezed together with the second limiting block, and a plurality of movable rods are connected to the side of the support frame away from the wedge rod, and the movable rod and the transfer bracket are slidably connected.

[0009] As a preferred technical solution of the present invention, it also includes a first limit block, which is slidably connected to the first guide rod, a first limiting hole is opened on the side of the second guide rod away from the first guide rod, the first limiting hole and the first limit block are snap-fitted, a first spring is connected between the bottom of the first limit block and the first guide rod, a second limit block is slidably connected to the second guide rod, a second limiting hole is opened on the transfer bracket, the second limit block and the second limiting hole are snap-fitted, and a second spring is connected between the second limit block and the second guide rod.

[0010] As a preferred technical solution of the present invention, it also includes a second elastic rope, the second elastic rope is connected between the first limiting block and the second guide rod, and the first elastic rope is connected between the front part of the second limiting block and the transfer bracket.

[0011] As a preferred technical solution of the present invention, it also includes symmetrically arranged magnetic rods, which are respectively fixed on the transfer frame. The magnetic rods are connected to the symmetrically arranged magnetic columns through magnetic adsorption. Pull rods are connected between the laterally symmetrically arranged magnetic columns, and the pull rods and the push rods are squeezed together.

[0012] As a preferred technical solution of the present invention, it also includes rolling wheels, and a plurality of rolling wheels are rotatably connected to the bottom of the transfer frame.

[0013] As a preferred technical solution of the present invention, it also includes a handle, which is arranged on the side of the transfer frame.

[0014] Beneficial effect: The present invention manually pulls the push rod to move forward, and after the push rod is disengaged from the lifting rod, the lifting rod automatically moves upward to push the connecting plate upward, and can make the transfer protection frame automatically move upward and no longer block the camshaft. Then, when the push rod continues to be pulled, the transfer bracket is driven to move forward to pull the required camshaft forward, making it convenient for people to take out the camshaft; the present invention moves the transfer bracket forward, and the transfer bracket drives the support frame and the wedge rod to move forward. After the wedge rod contacts the second limiting block, the wedge rod will automatically move upward to drive the support frame to move upward, and the support frame can automatically lift the camshaft upward, so that the camshaft and the transfer bracket are separated, so that people can use a clamp to clamp the camshaft out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the support plate, the first guide rod, the second guide rod, etc. of the present invention.

[0017] Figure 3 It is a three-dimensional structural sectional view of the transfer protection frame and guide rails etc. of the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the third guide rod and the push rod etc. of the present invention.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the lifting rod and torsion spring etc. of the present invention.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the wedge rod and the support frame of the present invention.

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the support frame and movable rod etc. of the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the fourth guide rod and the locking rod etc. of the present invention.

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of the first elastic rope and the second elastic rope of the present invention.

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of the first limit block and the second limit block of the present invention.

[0025] Fig.11 It is a three-dimensional structural cross-sectional view of the magnetic rod and magnetic column of the present invention.

[0026] Marked in the figure: 1-transfer frame, 11-rolling wheel, 2-handle, 3-support plate, 31-first guide rod, 32-second guide rod, 33-transfer bracket, 34-transfer protection frame, 35-guide rail, 36-first limiting block, 37-second limiting block, 4-third guide rod, 41-push rod, 42-lifting rod, 43-torsion spring, 44-connecting plate, 5-wedge rod, 51-support frame, 52-movable rod, 6-fourth guide rod, 61-positioning rod, 62-square groove, 63-wedge block, 7-first elastic rope, 71-second elastic rope, 72-first spring, 73-first limit block, 74-second limit block, 75-second spring, 8-magnetic rod, 81-magnetic column, 82-pull rod. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0028] Example 1: Based on the inter-process transfer equipment for camshaft production, such as Figure 1-Figure 4 As shown, it includes a transfer frame 1, me and you. The left and right sides of the lower part of the transfer frame 1 are symmetrically rotatably connected with rolling wheels 11. The middle of the right side of the transfer frame 1 is fixedly connected with a handle 2, and people can conveniently push the rotating frame to move by holding the handle 2. Support plates 3 are welded on the upper and lower sides of the transfer frame 1. Six first guide rods 31 distributed at equal intervals are welded on the top of the support plate 3. First limiting blocks 36 are arranged on the left and right sides of the front of the first guide rod 31. The first guide rod 31 is slidably connected with a second guide rod 32. The first limiting block 36 and the second guide rod 32 are squeezed together. The first limiting block 36 is used to The second guide rod 32 is restricted from moving forward out of the first guide rod 31. Second limiting blocks 37 are fixedly connected to the left and right sides of the front of the second guide rod 32. A transfer bracket 33 for storing the camshaft is slidably connected to the second guide rod 32. The second limiting blocks 37 are squeezed and matched with the transfer bracket 33. The second limiting blocks 37 are used to restrict the transfer bracket 33 from moving forward out of the second guide rod 32. Six equally spaced guide rails 35 are fixedly connected to the rear of the transfer frame 1. A transfer protection frame 34 is slidably connected to the guide rails 35. The transfer protection frame 34 is used to cover the upper part of the transfer bracket 33 to cover and protect the top of the camshaft.

[0029] like Figure 5As shown, it also includes a third guide rod 4, which is fixedly connected to the front of the transfer bracket 33, and a pushing rod 41 is slidably connected to the third guide rod 4. A connecting plate 44 is fixedly connected to the rear of the transfer protection frame 34, and six lifting rods 42 distributed at equal intervals are rotatably connected on the upper and lower sides of the rear of the transfer frame 1. The lifting rods 42 are respectively located under the connecting plates 44, and the lifting rods 42 and the connecting plates 44 are squeezed together. The lifting rods 42 and the pushing rods 41 are squeezed together, and a torsion spring 43 is connected between the left and right sides of the lifting rod 42 and the transfer frame 1.

[0030] like Figure 8 As shown, it also includes a fourth guide rod 6, which is fixedly connected to the left rear position of the second guide rod 32, and a locking rod 61 is slidably connected to the fourth guide rod 6. An inclined surface is provided below the locking rod 61, and the inclined surface below the locking rod 61 is snap-fitted with the first limiting block 36. A wedge block 63 is fixedly connected to the left rear side of the transfer bracket 33, and the wedge block 63 and the locking rod 61 are squeezed and fitted. A square groove 62 is opened on the left rear side of the transfer bracket 33, and the square groove 62 and the locking rod 61 are snap-fitted.

[0031] The camshaft can be transported by using the inter-process transfer equipment for camshaft production. After the transfer frame 1 is moved to the destination by holding the handle 2, the push rod 41 can be manually pulled forward, and the rear part of the push rod 41 will slowly disengage from the lifting rod 42, and the torsion spring 43 in a twisted state will drive the lifting rod 42 to rotate upward, and the upward rotation of the lifting rod 42 will push the connecting plate 44 to move upward, and the upward movement of the connecting plate 44 will drive the transfer protection frame 34 connected thereto to move upward, and the transfer protection frame 34 will no longer be blocked by the transfer bracket 33. When the push rod 41 moves forward to the front end of the third guide rod 4, people can pull the push rod 41 forward, and the push rod 41 will The third guide rod 4 will be driven to move forward, and the upward movement of the third guide rod 4 will pull the transfer bracket 33 to move forward. The forward movement of the transfer bracket 33 will drive the cam shaft on the transfer bracket 33 to move forward, and the forward movement of the transfer bracket 33 will drive the wedge block 63 to move forward. Since the front part of the wedge block 63 is blocked at the rear of the blocking rod 61, the forward movement of the wedge block 63 will push the blocking rod 61 to move forward, and the forward movement of the blocking rod 61 will drive the fourth guide rod 6 and the second guide rod 32 to move forward together. When the second guide rod 32 moves forward and contacts the first limiting block 36, the inclined surface below the blocking rod 61 just contacts the first limiting block 36, and the first limiting block 36 will push the blocking rod 61 to move forward. The positioning rod 61 moves upward, and after the positioning rod 61 moves upward and separates from the square groove 62, the positioning rod 61 is also separated from the wedge block 63, and then the pushing rod 41 can be continued to be pulled forward, and the pushing rod 41 continues to drive the transfer bracket 33 to move forward, and the transfer bracket 33 moves forward to drive the second limiting block 37 and the second guide rod 32 to move forward. At this time, since the first limiting block 36 blocks the second guide rod 32 from continuing to move forward, the transfer bracket 33 will move forward along the second guide rod 32, and the transfer bracket 33 will move the camshaft completely forward out of the transfer rack 1, and people can use the clamp to clamp the camshaft out, which makes it convenient for people to take out the camshaft, and then the pushing rod 41 and the transfer bracket can be manually The bracket 33 is pushed backward to reset, thereby driving the second guide rod 32 to move and reset. The second guide rod 32 drives the fourth guide rod 6 and the locking rod 61 to move backward to reset. When the bottom of the locking rod 61 is separated from the first limiting block 36 and the transfer bracket 33 is moved backward along the second guide rod 32 to reset, the top of the locking rod 61 coincides with the square groove 62. At this time, the locking rod 61 will automatically move downward and reset due to its own gravity. When the rear part of the push rod 41 contacts the lifting rod 42, it will drive the lifting rod 42 to rotate backward and reset. The torsion spring 43 is twisted. After the lifting rod 42 rotates backward and separates from the connecting plate 44, it automatically moves downward and resets under the action of gravity of the transfer protection frame 34 and the connecting plate 44.

[0032] Each transfer bracket 33 is designed to be independent, and each transfer bracket 33 can store a camshaft. If a camshaft is to be taken out, only one of the transfer brackets 33 needs to be pulled out, and there is no need to pull out all the camshafts together, so a single camshaft can be conveniently taken out.

[0033] Embodiment 2: Based on embodiment 1, Figure 6-Figure 7 As shown, it also includes a support frame 51, which is slidably connected to the transfer bracket 33. The support frame 51 is used to lift the cam shaft upward. A wedge rod 5 is welded on the lower right side of the support frame 51. The wedge rod 5 and the rear part of the second limiting block 37 are squeezed together. Three movable rods 52 are fixedly connected to the lower left part of the support frame 51. The movable rod 52 and the transfer bracket 33 are slidably connected.

[0034] In order to further facilitate the removal of the camshaft, a wedge rod 5 is provided. When the transfer bracket 33 moves forward, the wedge rod 5 is driven to move forward. When the wedge surface at the front of the wedge rod 5 contacts the second limiting block 37, the wedge rod 5 is driven to move upward. The wedge rod 5 drives the support frame 51 and the movable rod 52 to move upward. The upward movement of the support frame 51 can automatically lift the camshaft, so that the camshaft can be automatically separated from the transfer bracket 33, so that people can conveniently use the clamp to clamp the camshaft out. If the camshaft is placed in the transfer bracket 33, it is difficult to clamp the camshaft using the clamp. Afterwards, when the transfer bracket 33 moves backward, the wedge rod 5 is driven to move backward and reset. After the wedge rod 5 is separated from the second limiting block 37, it will move downward and reset under the action of gravity of the support frame 51, driving the wedge rod 5 and the movable rod 52 to move downward and reset.

[0035] like Figure 9-10 As shown, it also includes a first limit block 73, which is slidably connected to the front upper part of the first guide rod 31, and a first limiting hole is opened at the rear lower part of the second guide rod 32. The first limiting hole and the first limit block 73 are snap-fitted, and a first spring 72 is connected between the bottom of the first limit block 73 and the first guide rod 31, and a second limit block 74 is slidably connected to the front upper part of the second guide rod 32. A second limiting hole is opened at the rear lower part of the transfer bracket 33, and the second limit block 74 is snap-fitted with the second limiting hole, and a second spring 75 is connected between the bottom of the second limit block 74 and the second guide rod 32.

[0036] like Fig. 9As shown, it also includes a second elastic rope 71, and the second elastic rope 71 is connected between the front part of the first limiting block 36 and the second guide rod 32, and the first elastic rope 7 is connected between the front part of the second limiting block 37 and the transfer bracket 33. After people pull the transfer bracket 33 forward to pull the camshaft forward, since the transfer bracket 33 is slidably connected to the second guide rod 32, and the second guide rod 32 is slidably connected to the first guide rod 31, when people use the clamp to clamp the camshaft, people may accidentally touch the transfer bracket 33, causing the transfer bracket 33 to move backward. Therefore, the second limit block 74 and the first limit block 73 are set. When the transfer bracket 33 and the second guide rod 32 move forward, the first limit hole and the second limit hole are driven to move forward together, and the first elastic rope 7 and the second elastic rope 71 are stretched. When the second limit hole and the second limit block 74 contact, the first spring 72 will drive the second limit hole to move forward. The positioning block 74 is inserted into the second limiting hole. When the first limiting hole and the first limiting block 73 are in contact, the second spring 75 will drive the second limiting block 74 to move upward and fit into the first limiting hole. In this way, the position of the second guide rod 32 and the transfer bracket 33 can be limited to prevent people from accidentally touching them and causing the second guide rod 32 and the transfer bracket 33 to move, thereby affecting material removal. Afterwards, after removing the camshaft, the transfer bracket 33 and the second guide rod 32 can be moved backward a certain distance to disengage the second limiting hole and the second limiting block 74, and the first limiting hole and the first limiting block 73 are disengaged. Subsequently, under the action of the first elastic rope 7 and the second elastic rope 71, the second guide rod 32 and the transfer bracket 33 will be driven to move backward and reset.

[0037] like Fig.11 As shown, it also includes symmetrically arranged magnetic rods 8. The left and right symmetrically arranged magnetic rods 8 are respectively fixed on the left and right sides of the front part of the transfer frame 1. The upper and lower sides of the magnetic rods 8 are connected with magnetic columns 81 through magnetic adsorption. Pull rods 82 are connected between the laterally symmetrically arranged magnetic columns 81, and the pulling rods 82 and the pushing rods 41 are squeezed together.

[0038] If it is necessary to take out a layer of camshafts together, the pulling rod 82 can be held and moved downward. When the pulling rod 82 moves downward and approaches the pushing rod 41, the pulling rod 82 is located at the rear side of the front part of the pushing rod 41. Then, people can hold the pulling rod 82 and move it forward. The pulling rod 82 will pull the pushing rod 41 forward. The forward movement of the pulling rod 82 will drive the magnetic column 81 to move forward and disengage from the magnetic rod 8. In this way, a layer of pushing rods 41 can be moved forward synchronously through the pulling rod 82, thereby facilitating the removal of a layer of camshafts together. Later, when the pulling rod 82 needs to be reset, the magnetic column 81 can be adsorbed onto the magnetic rod 8.

[0039] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

Claims

1. A transfer device for inter-process transfer in camshaft production, comprising a transfer frame (1), characterized in that: The invention also comprises a support plate (3), wherein the support plate (3) is symmetrically arranged and arranged in the transfer frame (1), a plurality of first guide rods (31) are connected to the top of the support plate (3), the first guide rods (31) are connected to first limiting blocks (36) symmetrically arranged, the first guide rods (31) are all slidably connected to second guide rods (32), the first limiting blocks (36) and the second guide rods (32) are pressed and matched, the first limiting blocks (36) are used to limit the second guide rods (32) from moving out of the first guide rods (31), and the first limiting blocks (36) are used to limit the second guide rods (32) from moving out of the first guide rods (31). A symmetrically arranged second limiting block (37) is fixedly connected to one side of the second guide rod (32) close to the first limiting block (36); a transfer bracket (33) is slidably connected to the second guide rod (32); the second limiting block (37) is extruded and matched with the transfer bracket (33); the second limiting block (37) is used to limit the transfer bracket (33) from moving out of the second guide rod (32); a plurality of equally spaced guide rails (35) are connected to the transfer rack (1); and a transfer protection rack (34) is slidably connected to the guide rails (35).

2. The inter-process transfer equipment for camshaft production according to claim 1, characterized in that: The invention also comprises a third guide rod (4), the third guide rod (4) is connected to one side of the transfer bracket (33), a push rod (41) is slidably connected to the third guide rod (4), a connecting plate (44) is fixedly connected to the side of the transfer protection frame (34) away from the third guide rod (4), a lifting rod (42) is rotatably connected to the side of the transfer frame (1) close to the connecting plate (44), the lifting rod (42) and the connecting plate (44) are pressed together, the lifting rod (42) and the push rod (41) are pressed together, and a torsion spring (43) is connected between the lifting rod (42) and the transfer frame (1).

3. The inter-process transfer equipment for camshaft production according to claim 2, characterized in that: The invention also comprises a fourth guide rod (6), which is fixedly connected to the side of the second guide rod (32), a locking rod (61) is slidably connected to the fourth guide rod (6), the locking rod (61) is provided with an inclined surface, the inclined surface of the locking rod (61) is engaged with the first limiting block (36), a wedge block (63) is connected to the side of the transfer bracket (33) close to the locking rod (61), the wedge block (63) and the locking rod (61) are pressed and engaged, and a square groove (62) is provided on the side of the transfer bracket (33) close to the wedge block (63), and the square groove (62) and the locking rod (61) are engaged and engaged.

4. The inter-process transfer equipment for camshaft production according to claim 3, characterized in that: The invention also comprises a support frame (51), wherein the support frame (51) is respectively connected to the transfer frame (33) in a sliding manner, a wedge rod (5) is arranged on the side of the support frame (51), the wedge rod (5) and the second limiting block (37) are pressed and matched, and a plurality of movable rods (52) are connected to the side of the support frame (51) away from the wedge rod (5), and the movable rods (52) and the transfer frame (33) are connected in a sliding manner.

5. The inter-process transfer equipment for camshaft production according to claim 4, characterized in that: The invention also comprises a first limit block (73), the first limit block (73) is slidably connected to the first guide rod (31), a first limit hole is formed on the side of the second guide rod (32) away from the first guide rod (31), the first limit hole and the first limit block (73) are snap-fitted, a first spring (72) is connected between the bottom of the first limit block (73) and the first guide rod (31), a second limit block (74) is slidably connected to the second guide rod (32), a second limit hole is formed on the transfer bracket (33), the second limit block (74) is snap-fitted with the second limit hole, and a second spring (75) is connected between the second limit block (74) and the second guide rod (32).

6. The inter-process transfer equipment for camshaft production according to claim 5, characterized in that: It also includes a second elastic rope (71), which is connected between the first limiting block (36) and the second guide rod (32), and the first elastic rope (7) is connected between the front part of the second limiting block (37) and the transfer bracket (33).

7. The inter-process transfer equipment for camshaft production according to claim 6, characterized in that: It also includes symmetrically arranged magnetic rods (8), which are respectively fixed on the transfer frame (1), and the magnetic rods (8) are connected to symmetrically arranged magnetic columns (81) through magnetic adsorption, and pulling rods (82) are connected between the transversely symmetrically arranged magnetic columns (81), and the pulling rods (82) and the pushing rods (41) are pressed and matched.

8. The inter-process transfer equipment for camshaft production according to claim 1, characterized in that: It also includes rolling wheels (11), and a plurality of rolling wheels (11) are rotatably connected to the bottom of the transfer frame (1).

9. The inter-process transfer equipment for camshaft production according to claim 1, characterized in that: It also includes a handle (2), which is arranged on the side of the transfer frame (1).

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